Need advice for two non-working IIe/IIc monitors
Toinet
From previous auctions, I have bought a IIe and a IIc monitor (with
its stand) and both do not display any image and I need your advice
about the problems and a potential repair (remember I am in Paris,
France and I do not want to send my monitor to the USA ;-) if that is
worth it.
All tests have been performed with my IIe computer, validating the
display output with a third and working Zenith monitor, I can say the
IIe outputs video normally.
The IIe monitor (model Monitor II A2M2010P):
- turns on when plugged in
- displays no image.
The IIc monitor (model G091S):
- turned on when plugged in
- displayed the IIe image
I was happy and then... pschitt! Smoke came out from the monitor. I
turned it off and I have to admit I do not really want to turn it on
again.
What can I do? I mean I am not an engineer, can change a fuse and
that is all. I may sell it on eBay for pieces. Bringing them to a TV
repair may cost more money than the monitor, I do not know if that is
worth the try unless some of you already encountered such issues and
may explain how to fix them.
I thank you in advance,
antoine
Geo3
Hi,
If you have any TV repair shops they should be able to fix them. But
that can cost. Any schools in your area that teach electronics might
be able to fix them. You would have to talk to the teachers directly
which can be hard to do but a lot cheaper.
In order for you to fix it your self you will have to give the group
something to work with. That is what it is doing, sounds and all. You
might have to use a volt meter to read certain check points, Be able
to drain caps so you do not get shocked when replacing something.
Take Care,
George
Wizard Of Oz
I would second the first alternative. A lot of the TV repair shops
would have the parts needed to fix them. Even if you could do it
yourself you would have to consider the time, effort, and frustration
going into getting them running again. It's better to turn it over to
the shop and let them deal with it. Besides if any of them are beyond
hope, the shop is better equipped for recycling than most people are.
Later
Mike
Michael J. Mahon
Unless the CRT or some proprietary part is dead, they can almost
certainly be fixed for a very small hardware cost. Labor cost is
the determining factor, which is why you will need to either do it
yourself (acquiring whatever education is required) or find someone
with the experience and motivation to fix them without charging (much)
for labor.
-michael
NadaNet 3.0 for Apple II parallel computing!
Home page: http://home.comcast.net/~mjmahon/
"The wastebasket is our most important design
tool--and it's seriously underused."
Polymorph
Antoine,
Not enough to go on with the first monitor (the //e one), but the //c
monitor sounds like a capacitor has blown in the monitors power supply
- probably one of the mains filter capacitors. This requires
replacement of the blown capacitors - meaning de-soldering the blown
capacitor(s) and replacing them with new ones. Whilst the procedure is
fairly straight forward for someone with some soldering skills (I've
fixed a few monitors of late), I wouldn't recommend it if you are
uncomfortable - it can be dangerous in this area, as there are some
pretty high voltages being stored in those capacitors, and they need
to be fully discharged before you can replace them. Usually, leaving
the monitor turned off and unplugged for a few hours will do the
trick, but I have heard of capacitors holding their charge for much
longer than this. So, if you are uncomfortable, seek help from someone
with the know-how as others have suggested.
Cheers,
Mike
Toinet
by doing with the HV inside the monitors. The last time I used a
soldering iron was 20 years ago, I will let specialists show their
skills, I do not have enough time to invest in that task (I don't even
know what a capacitor is, you know), maybe when I am 70 yo.
I like the school idea. I will connect to pagesjaunes.fr (yellow
pages) tomorrow...
Thanks again,
Antoine
Toinet
component on a small board: RIFA PME 271M 40/085/56 (0,1 uf X2)
It is a "condensateur d'antiparasitage":
http://www.abcelectronique.com/forum/archive/index.php/t-37045.html
It seems easy to remove the "stuff" and replace it once identified and
bought ;-)
antoine
Michael J. Mahon
Those capacitors are readily available--just be sure to get an X2-rated
capacitor, since it is connected directly across the AC line.
The purpose is to reduce supply-generated RFI and to protect the supply
from fast transients on the line. If you have clean power, you can
operate the supply without it.
When it shorted, then "popped", it probably blew the fuse, though they
occasionally fail in a way that leaves the fuse intact. In the latter
case, the device will continue to operate (but the capacitor residue
will smell very bad until it's cleaned out and aired out).
Toinet
> Those capacitors are readily available--just be sure to get an X2-rated
> capacitor, since it is connected directly across the AC line.
That confirms what I have understood from my previous reading.
>
> The purpose is to reduce supply-generated RFI and to protect the supply
> from fast transients on the line. If you have clean power, you can
> operate the supply without it.
>
> When it shorted, then "popped", it probably blew the fuse, though they
> occasionally fail in a way that leaves the fuse intact. In the latter
fuse is: 500 mA, 250 V.
> occasionally fail in a way that leaves the fuse intact. In the latter
> case, the device will continue to operate (but the capacitor residue
> will smell very bad until it's cleaned out and aired out).
>
That is exactly it. What a smell!
Thank you for the explanation,
antoine