The sensor for the relative humidity is a thin ceramic square with
interlaced finger patterns deposited on the ceramic (looks like a
VCR/camcorder dew sensor). This sensor is placed inside the front grille in
path of the incoming air flow (but inside a small vented plastic box).
As the humidity rises, the very high resistance decreases.
Searching the model number revealed that many owners have had the same
experience with this model, that the unit worked great for 1 season, then no
worky.
This Goldstar DH305 is a normal looking small dehumidifier with no digital
readout or other controls that would give the impression that it's a
complicated appliance.. only an Off/1-9/Max pot (no integral switch) and a
high-low fan speed rocker switch.
BTW, the wrap-around metal cover needs to come off to access the controller
board.
When turned on, the fan runs for maybe a couple minutes, then stops. The
unit will not do anything else unless turned off then back on, after which
the same action repeats.
The capture container float switch isn't a problem.. it works normally and
turns on the red panel LED to show that the bucket needs emptied, indicating
that the unit isn't going to operate until it's emptied.
As stated earlier, the Off/On is just a pot, and the varying resistance
turns the controller circuit on, and the 1-to-Max setting will determine the
amount of run time.
The controller circuit looks fairly simple until the solder side of the
board is seen.. yep, another example of unnecessarily complicated design,
IMO.
The underside of the board has about 30% of the area populated with surface
mount components, including a 87C809 8-bit microcontroller.
After determining that the pot, switch and other sensors are apparently
working (PTC, NTC components).. and the ciruit board soldering looks
reasonable, I forced the unit into operation by huffing moist breath onto
the humidity sensor, the way one does the Haaaaah on their eyeglass lenses
to clean them.
So, the unit is capable of operating normally, and I checked that the
controller relay, not the temperature protector, was cutting off the
compressor.
This isn't an expensive appliance (maybe $140 new), but since it's still
functional, I'll attempt to return it to "fairly normal" operation (gold
star, better than it was/is now).
The voltage across the humidity sensor is approximately 4V AC when dry
(well, that's relative to the ambient humidity), and the unit goes into
operation when the moisture causes the voltage to drop to approx 0.085V
(85mV), which may not be accurate if there is a delay involved for some
(unknown to me) reason.
I'm contemplating cleaning the sensor a couple of times (although it appears
to be perfectly clean), checking the cicuit for a resistor that's drifted
high in value.. or adding a parallel resistor of maybe 2-5 Megohm across the
sensor (to get the voltage level down to a reasonable range.
Information I have, regarding cleaning and calibration of humidity sensors
cautions against using certain chemicals such as ammonia, alcohol,
formaldehyde.. and suggests only using distilled water and drying in a clean
area (or perchloroethylene for contaminated sensors).
This effort could be somewhat simplified if I were using a calibrated RH
meter.. I have these, but they haven't been calibrated for over 6 years, so
I'm not confident of their accuracy. The Solomat manual includes a saturated
salt reference method but I haven't tried it.
An alternative option could be to install a mechanical strip-type sensor
with an integral microswitch.. I've seen old versions which have set-point
adjustments, but I don't think I have any.
--
Cheers,
WB
.............
I recently tried to troubleshoot a Zenith dehumidifier that turned out ot be
a LG underneath. The humidy sensor was made by these guys
http://www.samyoungsnc.com/products/SYH-2R.pdf
and is capacitive in design. The board also has a thermistor with a 2wire
plus common wiring harness and sells for 27USD in Ohio.
--
They can have my command prompt when they pry it from my cold dead fingers.
Have you tried an ex-vcr humidity/condensation sensor as they seem very
reliable
Did you use the replacement part, and has the dehumidifier worked for longer
than one season?
The sensor module in this DH305 unit also has a small thermistor (I think
for ambient temp, because generally, dehumidifiers aren't supposed to be run
when ambient is below about 60F), and a 3-wire lead.
BTW, the Samyoung PDF info states the sensor is resistive.
This appears to be the RH sensor in the DH305 model, with specs very similar
to the Samyoung in the PDF you provided:
http://www.sangshinec.com/eng/hum_ksh02.htm
The actual value of a used dehumidifier is fairly low, probably less than
50% of what a new one could be bought for, so spending $32 to repair a unit
worth about $40 doesn't appeal to me.. particularly since the next fault may
be only weeks away.
This is, after all, just another example of low grade consumer crap.
I didn't want to get into a research project, but that's typical of
repairing anything these days.
Trouble is.. I got curious (again).
I don't need/want repair work, and my friends understand that.
I prefer to spend my time on my stuff of higher quality and greater value.
--
Cheers,
WB
.............
"George Jetson" <GJe...@yahoo.com> wrote in message
news:j08f0i$9v5$1...@dont-email.me...
> "Wild_Bill" <wb_wi...@XSPAMyahoo.com> wrote in message
> news:Z%EVp.92986$fD6....@en-nntp-02.dc1.easynews.com...
>>A friend asked me to attempt to find a fault in a short-lived dehumidifier
>>that functioned well for 1 season, but failed to operate after being
>>unused until needed again.
>>
>> The sensor for the relative humidity is a thin ceramic square with
>> interlaced finger patterns deposited on the ceramic (looks like a
>> VCR/camcorder dew sensor). This sensor is placed inside the front grille
>> in path of the incoming air flow (but inside a small vented plastic box).
>> As the humidity rises, the very high resistance decreases.
>>
>
When I pried open the plastic capsule for the dehumidifier's RH sensor, a
VCR sensor was the first thing that occurred to me.
I remember playing around with some of the VCR dew sensors but hadn't
actually tried using them for any other uses.
If I manage to get this unit to operate safely and relatively normally, I'll
accept that it's good enough.. it may not operate quite as efficiently, but
I don't see that it was rated as a high-efficiency/energy star unit, anyway
(and I have the user manual that was supplied).
BTW, there's a caution, which states.. Don't drink the water from the
dehumidifier!
I've modified older models to just cycle the compressor on for a reasonable
time with the fan running continuously, and they captured a lot of moisture
from the air.. in fact, very close to their original quarts-per-day rating
when they were new.
That was the reason for the "unnecessarily overcomplicated" comment in my
original post.
If this unit had been manufactured with a mechanical film strip RH
sensor/switch, it likely would have operated normally until a major problem
developed, likely many years later.
But ohfuckno, the geniuses had to implement a microprocessor for a simple
appliance.
The consumers get it again.. BOHICA
--
Cheers,
WB
.............
"N_Cook" <div...@tcp.co.uk> wrote in message
news:j08lrn$bdv$1...@dont-email.me...
My bad, the pdf I pointed you to was resistive but there was another that is
capacitive.
I got off the hook fixing this dehumidifier as its still under warranty.
The problem started 3 months after purchase and others report about 1 yr
before it occurs.
The symptoms were shutting down after 2 seconds and throwing a 01 error
code. The mfg doesn't have any online info about error codes. Many others
seem to be suffering this error as well.
There is no reason to expect that the dehumidifier will last for several
years, even if the sensor is replaced, which may only mean that the sensor
may need replacing again next year.
There were numerous reported failures of these models after one year, so a
repair that returns the unit to a "good as new" level, only means that it's
likely to fail again next year.
The sensor manufacturer's specs show a voltage rating of 1V, and I've seen
4V AC present at the sensor (the sensor resistance decreases as humidity
increases).
I don't know, but I suspect that this may have caused a change/drift in the
sensor's characteristics.
This exercise in frustration is another example of the present level of
quality of consumer goods.
The race to the bottom has led us to the point of new levels of
consumerism.. where it's unreasonable to have any expectations of quality,
and the stores are always full of new crap to replace the old crap.
Shopping for new crap has become a form of recreation, at least here in the
US.. they can't build malls fast enough to satisfy the cravings.
This dehumidifier was essentially produced with the lowest cost parts
available (the electrolytics are 85C rated in an appliance that will
generate a lot of heat) which are then assembled with lead-free solder, and
rushed to a store near you.
This is the primary reason why I quit repairing stuff, even for friends.
--
Cheers,
WB
.............
Ok then stop fixing things, if you can. Most of the people here enjoy logic
problems and diagnosing broken stuff. Admit your a junkie just like the
rest of us, we have meetings every week.
Some of my really old SER posts mention the problems/pitfalls associated
with being inquisitive, and yes.. it's a life-long crusade/curse of sorts.
I don't buy expensive new high-end gear because when it fails (usually just
as soon as a cheap product will) the disappointment is always greater.
I'll buy quality used gear and make do with it.. but sometimes repairing
those free or $1 flea market/hamfest acquisitions can burn up a lot of time
and effort (research projects, as stated earlier).
--
Cheers,
WB
.............
"George Jetson" <GJe...@yahoo.com> wrote in message
news:j0dcqh$vck$1...@dont-email.me...
> I had already confessed.. my excuse, stated earlier, was that I got curious
> (again).
>
> Some of my really old SER posts mention the problems/pitfalls associated
> with being inquisitive, and yes.. it's a life-long crusade/curse of sorts.
>
> I don't buy expensive new high-end gear because when it fails (usually just
> as soon as a cheap product will) the disappointment is always greater.
>
> I'll buy quality used gear and make do with it.. but sometimes repairing
> those free or $1 flea market/hamfest acquisitions can burn up a lot of time
> and effort (research projects, as stated earlier).
Yeah, but there's nothing like the feeling of taking a dead piece of
equipment and breathing new life into it. It's especially gratifying
if one can not only fix it, but improve it in the process. And you
know that piece of equipment, inside and out. If something goes wrong,
you know what's wrong and how to fix it. You can picture in yer head
the part that's failing, even before you tear it down to take a look
at it.
For me, it's engines, but I can see where electronic gear would
provide the same sort of feeling of pride.
I don't view it as a waste of time, it's my relaxation time.
You should embrace yer inner tinkerer.
--
___ ___ ___ ___
/\ \ /\__\ ___ /\ \ /\__\
/::\ \ /:/ / /\ \ /::\ \ /::| |
/:/\:\ \ /:/ / \:\ \ /:/\:\ \ /:|:| |
/::\~\:\ \ /:/ / /::\__\ /::\~\:\ \ /:/|:| |__
/:/\:\ \:\__\ /:/__/ __/:/\/__/ /:/\:\ \:\__\ /:/ |:| /\__\
\/__\:\/:/ / \:\ \ /\/:/ / \:\~\:\ \/__/ \/__|:|/:/ /
\::/ / \:\ \ \::/__/ \:\ \:\__\ |:/:/ /
/:/ / \:\ \ \:\__\ \:\ \/__/ |::/ /
/:/ / \:\__\ \/__/ \:\__\ /:/ /
\/__/ \/__/ \/__/ \/__/
WHO IS 'MEAT PLOW' from Alt.Usenet.Kooks (AUK)?
The obese, abusive, ugly, snaggle-toothed, giant-headed, gay 'bear'
biker retard who likes to surf gay porn sites as 'BlancoBear' while
wearing only assless chaps:
William Malone Griffith, Jr.
(aka Milt, Meat Plow, BlancoBear, Me...@petitmorte.net, Tripp)
308 10th Street NE
North Canton, OH 44720-2023
Some of this sick fuck's best work, and comments from others about
him:
http://groups.google.com/group/alt.buzzard.rules/msg/f630759d6303a19d
Message-ID: <SFexc.17128428$Of.28...@news.easynews.com>
Willy claims to be a member of SPUTUM (Subgenius Police, Usenet
Tactical Unit, Mobile), but subgenius doesn't even BEGIN to describe
Willy...
http://groups.google.com/group/soc.net-people/msg/b42fac45ef5210f9
Is yer CapsLock on, Willy?
Evidence that Meat Plow is William Malone Griffith, II:
--------------------
http://groups.google.com/group/alt.usenet.kooks/msg/5650f8e1e7dedefa
Message-ID: <fc5167ee7ad8e6f6...@rip.ax.lt>
http://groups.google.com/group/sci.electronics.repair/msg/e52ffbb346f5b764
Message-ID: <ac995ab01f76a177...@rip.ax.lt>
http://groups.google.com/group/alt.usenet.kooks/msg/a94a2a11df601e39
Message-ID: <f6ccd46e74bff6e9...@rip.ax.lt>
http://groups.google.com/group/sci.electronics.repair/msg/ef80aad2e7db945d
Message-ID: <2abe74de52d65b60...@rip.ax.lt>
--------------------
Meat Plow personal info:
--------------------
Birthdate: Oct 3, 1955
Amateur Radio callsign N8NCX
Technician Plus
(2 meter, 6 meter)
--------------------
--------------------
Photo of MeatPlow in Belden Village Music store (his sister's music
store):
(Note the guitars in the background, the planet-sized head,
the rotten-Chiclet teeth, and general look of retardation)
http://www.productwiki.com/william-malone-griffith-ii/lists/
http://images.productwiki.com/upload/images/william_malone_griffith_ii_avatar_1_0-150-150.jpg
Photo of William Malone Griffith, Jr. from uffnet.com:
(Note that it's the same person as in the photo above)
http://www.uffnet.com/library/headlines/images/news1376621745xlb.jpg
He's got his father's nose and eyes:
http://www.legacy.com/guestbook/kentucky/guestbook.aspx?pid=2527782
http://mi-cache.legacy.com/usercontent/guestbook/photos/2005-09/6966764.jpg
--------------------
Meat Plow email addresses:
--------------------
http://web.archive.org/web/20010305113423/http://www.k1hk.org/ugb_archive3.html
"Bill N8NCX wgri...@neo.rr.com"
wgriffit at neo.rr.com (neo = North East Ohio)
mhywattt at yahoo.com
mhywatt at yahoo.com
--------------------
Meat Plow admits to being from Ohio:
--------------------
Message-ID: <pan.2011.05...@emutt.macspoofer.lmao>
Message-ID: <pan.2011.05...@emutt.macspoofer.lmao>
--------------------
Meat Plow's brushes with the law:
--------------------
1}
http://www.starkcountycjis.org/crim/crim_display_docket_main?pass_case_no=11543&pass_case_type=VBD&pass_case_year=2002&pass_first_name=William&pass_last_name=Griffith
2}
http://www.starkcountycjis.org/civil/civil_display_docket_main?case_year_no=2009-3533&litigant_txt=Griffith
--------------------
Meat Plow quotes:
--------------------
Message-ID: <pan.2011.05...@emutt.macspoofer.lmao>
"I have no shame here in Usenet."
Message-ID: <pan.2011.05...@emutt.macspoofer.lmao>
"I'd bet $200.00 of that Keiser money you still have that you will
leave before me."
Meat Plow describes his high-powered legal team:
Message-ID: <pan.2011.05...@emutt.macspoofer.lmao>
"You know i have a legal team who specializes in internet law. And I
won't hesitate to get them in on the action."
Message-ID: <pan.2011.05...@emutt.macspoofer.lmao>
"I haven't changed nor do I plan on it any time in the near future.
And yes I am bullet-proof as I have proved it."
Meat Plow visits a massage parlor for a Happy Ending massage.
But they refused to give him a Happy Ending his second time there.
That explains why he's gay, he can't even PAY for HAND JOBS from
women.
-----
http://www.clreviews.com/forums/showpost.php?p=11679
"One time I got a HE, and the 2nd time I didn't. I was asked if I was
there both times and said I was. That's is why I didn't know if I said
something wrong the 2nd time which made me not get a HE."
Well, at least we know what he does with his weekends.
-----
Meat Plow losing his connection to reality, insinuating that he's law
enforcement:
Message-ID: <pan.2011.07...@emutt.macspoofer.lmao>
"I could be LE posing as Meat Plow. It can't be dis-proven."
--------------------
Oh, William, what would yer family say if they learned yer secrets?
Mother:
..----------------------------.
Catherine & Angelo Griffith
4760 Echovalley St. NW
North Canton, OH 44720-7504
330-494-5785
'----------------------------'
Sister:
..----------------------------------------.
Pamela L. & Roger R. Werling
{ son Todd E. Werling (Ft. Wayne, IN) }
{ son Chris (Kennesaw, GA) }
{ son Keith (Ft. Wayne, IN) }
{ grandson Easton }
{ grandson Zakary }
{ granddaughter Camella }
7704 Bisque Court
Fort Wayne, IN 46825-3501
260-489-6086
'----------------------------------------'
Sister:
..----------------------------------------------.
Cheryl J. & Jason 'Sparky' Humberto E. Rivera
{ daughter Christina }
{ daughter Rosalio (North Canton, OH) }
{ daughter Maria (North Canton, OH) }
{ son Len Gray (Ft. Worth, TX) }
5225 Echo Valley St. NW
North Canton, OH 44720-9702
----------------------------------------------
Belden Village Music
6787 Wales Ave NW
North Canton, OH 44720
beldenvillagemusic.com
330-497-9292
----------------------------------------------
Rosalio B & Maria I Rivera
444 Wales Rd. NE
Massillon, OH 44646-5875
330-833-4291
----------------------------------------------
PO Box 35093
Canton, OH 44735
'----------------------------------------------'
Sister:
..---------------------------------------.
Carol L. & Ric A. Campbell
{ son Richard }
{ son Christopher (North Canton, OH) }
{ son Brandon († 30 May 1996) }
{ daughter Erin }
6794 William Tell Ave NW
North Canton, OH 44720-6546
330-497-7980
330-499-5107
---------------------------------------
PO Box 36473
Canton, OH 44735
'---------------------------------------'
Sister:
..----------------------------------.
Christine H. & Shelton M. Vick
{ son Matthew }
3915 Harvard Ave NW
Canton, OH 44709-1538
330-493-5645
----------------------------------
Re/Max Edge Realty
North Canton / Massillon / Canton
Realtor Christine H. Vick
6929 Portage St. NW
North Canton, OH 44720-6535
330-236-5100
888-830-6509 (fax)
330-904-0883 (cell)
www.MyOhioHomeFinder.com
MyOhioHo...@gmail.com
'----------------------------------'
Sister:
..----------------------------.
Angela C. & Mark Warshefski
11 SE 12th St.
Pompano Beach, FL 33060
954-785-4716
----------------------------
4760 Echovalley St. NW
North Canton, OH 44720-7504
330-942-0584
'----------------------------'
Cousin:
..-------------------------.
Eddy Dailey
Bergholz Super Mart
861 Washington St.
Bergholz, OH 43908
740-768-1018
-------------------------
Bergholz Financial Corp.
dba SuperMart
PO Box 545
524 Garfield St.
Bergholz, OH 43908
'-------------------------'
Cousin:
..--------------------.
Donna L. Dailey
524 5th St.
Bergholz, OH 43908
740-768-2416
--------------------
Bergholz Super Mart
861 Washington St.
Bergholz, OH 43908
740-768-1018
--------------------
Bergholz, OH EMT
'--------------------'
Cousin:
..-------------------.
Bill & Joyce Leas
{ son Billy }
243 2nd St.
Bergholz, OH 43908
'-------------------'
Niece:
..---------------------------.
Rachel & Adam T. Livengood
{ son Lukas }
{ daughter Lauren }
6342 Palmer Dr. NW
Canton, OH 44718
330-497-7754
'---------------------------'
Izzatchoo, or yer dead daddy?
..--------------------------------.
William M. Griffith
between 3rd and 4th St.
between Monroe and Lincoln Ave.
Bergholz, OH 43908
740-768-2539
'--------------------------------'
What would yer landlord for 308 10th St. NE,
North Canton, OH say if they learned yer secrets?
..----------------------------.
David S. and Joan R. Shaner
2095 Waterbury Dr.
Uniontown OH 44312
330-699-4042
'----------------------------'
What would the employees at yer family's
business say if they learned yer secrets?
..-----------------------------------------.
Ohio Kentucky Oil Corporation
aka Ohio Oil & Gas Exploration (defunct)
aka Ohio Kentucky Coal Company (defunct)
5112 Portage St. NW
Canton, OH 44720-6856
(330) 494-8810
(330) 497-7980
-----------------------------------------
110 E. Lowry Lane
Lexington, KY 40503
(800) BUY 4 OIL
(800) 289-4645
(859) 223-5656
(859) 223-5946
(859) 276-0699 (fax)
(859) 276-3500
(859) 276-4080
-----------------------------------------
http://www.ohiokentuckyoil.com
oils...@insightbb.com
ad...@ohiokentuckyoil.net
'-----------------------------------------'
----------
Oh, but wait, Ohio Oil & Gas Exploration is no longer incorporated in
Ohio:
Daddy Griffith's petrol exploration company (defunct):
http://www2.sos.state.oh.us/pls/bsqry/f?p=100:7:3376481605987832::NO:7:P7_CHARTER_NUM:384125
Nor are any of the other businesses yer daddy started. You let them
all fail:
Daddy Griffith's stables (defunct):
http://www2.sos.state.oh.us/pls/bsqry/f?p=100:7:3376481605987832::NO:7:P7_CHARTER_NUM:377966
Daddy Griffith's motel business (defunct):
http://www2.sos.state.oh.us/pls/bsqry/f?p=100:7:3376481605987832::NO:7:P7_CHARTER_NUM:377965
Daddy Griffith's drilling company (defunct):
http://www2.sos.state.oh.us/pls/bsqry/f?p=100:7:3376481605987832::NO:7:P7_CHARTER_NUM:347837
Daddy Griffith's metals business (defunct):
http://www2.sos.state.oh.us/pls/bsqry/f?p=100:7:3376481605987832::NO:7:P7_CHARTER_NUM:552193
And Ohio Kentucky Oil Corporation is on its last legs, inundated with
securities fraud lawsuits and EPA lawsuits. It's barred from
soliciting investors in Tennessee due to securities fraud, it's under
investigation in Ohio and Kentucky, it owns no oil assets or wells,
and it no longer does any of its own drilling. It'll be gone soon,
too.
And you've squandered everything Daddy Griffith earned from his
businesses, so yer now poor, adding insult to injury.
----------
You being poor is why you issued the following. You knew you didn't
have ten thousand dollars or so to defend yerself against yet another
lawsuit:
William Malone Griffith, II's grovelfest of an apology for being a
fucktard stauker:
==================================================
http://groups.google.com/group/alt.usenet.kooks/browse_thread/thread/8d753c94bd612f4e
http://www.freak-search.com/en/thread/3859383/meat_plow_exposed
http://groups.google.com/group/alt.usenet.kooks/msg/c9fccf0d1ab26ace
Message-ID: <3n4c2e....@news.alt.net>
Title: Apology to Charles Novins
The witnesses to this abject, groveling apology:
Angela Griffith = Angela C. Griffith-Warshefski, William Malone
Griffith, Jr.'s sister
Catherine Griffith = William Malone Griffith, Jr.'s mother
Julia M. Griffith = ?
Cheri Griffith = Cheryl J. Griffith-Rivera, William Malone Griffith,
Jr.'s sister
Justin M. Griffith = ?
Kristy Griffith = Christine H. Griffith-Vick, William Malone Griffith,
Jr.'s sister
-----
Questions yet to be answered:
Who are Julia M. Griffith and Justin M. Griffith?
Angela C. Griffith-Warshefski came all the way from Pompano Beach,
Florida to witness and sign MeatPlow's apology letter?
Or did William Malone Griffith, Jr. forge the witness signatures,
which would indicate some level of insincerity in the apology?
If William Malone Griffith, Jr. did indeed forge the witness
signatures, is his family cognizant of him using them in this way?
Who is Deborah Ann Griffith?
-----
Who is Sherri Renee Christie, William D. Christie (age 54) and Lillie
L. Christie, and how are they associated with William Malone Griffith,
II?
1345 Bison St. NW
Massillon, OH 44647
330-833-5313 (Sherri)
330-837-4967 (William)
2524 Meadows Ave NW
Apt. 4
Massillon, OH 44647
PO Box 36221
Canton, OH 44735
-----
==================================================
It's time for a digital enema to flush this turd named William Malone
Griffith, II out of the system.
The exit is -.
|
'-----.
.---. .-----. |
| | '---. | |
'-. `-----|-' |
| '---'
'------------->
thataway
>I'll buy quality used gear and make do with it.. but sometimes repairing
>those free or $1 flea market/hamfest acquisitions can burn up a lot of time
>and effort (research projects, as stated earlier).
You can purchase the part (6877A30013R) at Sears for US$13.25:
http://www.searspartsdirect.com/partsdirect/part-number/6877A30013R/0042/580?pathTaken=&filterPart=&pop=flush&prst=0&shdPart=6877A30013R
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
I've been surprised many times by your abilities.
*(spelled correctly this time)
--
Cheers,
WB
.............
"Franc Zabkar" <fza...@iinternode.on.net> wrote in message
news:f39p27l7a9b349969...@4ax.com...