Sony SLV-595HF VCR HELP !!!
Adonis
the problem is that in SP recorded tapes the picture pops in every so
often (blue screen others) ,BUT on EP tapes it displays a picture but
alignment is needed (I've ordered the service manual;this thing is
starting to cost me big time).Now HERE'S THE CLUE.In FF search mode
the picture comes in on SP tapes with the usual noise bars in cueing.
I've scoped the RF envelope and it looks like one of the heads isn't
putting out a signal (pre-amp defective ?).
Is servo circuit defective ?
Also I tried recording at both speeds =garbage.
Can someone please steer me in the right direction .
Thanks
Andy Cuffe
I would guess dirty or defective heads. Head amps rarely fail. This
VCR shouldn't display any noise bars in SP search. In EP it uses a
different pair of heads; the noise bar you are seeing in SP search is
caused by the dead or dirty SP head. Also while you are in there,
remove the auto head cleaner and check the lubrication on the arm that
pulls the tape behind the pinch roller (it should snap back quickly).
--
Andy Cuffe
balt...@psu.edu
Haywire
pair of heads for sp playback, and the other pair for ep playback. Thus,
one head could be clogged, or physically broken and would produce the
symptom you describe... Because the picture is unmuted during search,
regardless of quality, and the other heads kick in for a better cue/rev.
pix, that explains why you have a pix during search mode. Also check the
takeup side guide arm on this unit... The grease gums up here, and can cause
it to eat tapes eventually (VERY common on this model).
Adonis wrote in message +ADw-3612a67f.9761732+AEA-news.total.net+AD4-...
+AD4-Picked this up for +ACQ-40 at a pawn shop as is.
+AD4-
+AD4-the problem is that in SP recorded tapes the picture pops in every so
+AD4-often (blue screen others) ,BUT on EP tapes it displays a picture but
+AD4-alignment is needed (I've ordered the service manual+ADs-this thing is
+AD4-starting to cost me big time).Now HERE'S THE CLUE.In FF search mode
+AD4-the picture comes in on SP tapes with the usual noise bars in cueing.
+AD4-
+AD4-I've scoped the RF envelope and it looks like one of the heads isn't
+AD4-putting out a signal (pre-amp defective ?).
+AD4-
+AD4-Is servo circuit defective ?
+AD4-
+AD4-Also I tried recording at both speeds +AD0-garbage.
+AD4-
+AD4-Can someone please steer me in the right direction .
+AD4-
+AD4-Thanks
Rudolf Ladyzhenskii
Then clean the head and it should be OK.
Head cleaners, from my experience, caused many similar problems on SONYs.
Rudolf
Adonis wrote in message <3612a67f...@news.total.net>...
>Picked this up for $40 at a pawn shop as is.
>
>the problem is that in SP recorded tapes the picture pops in every so
>often (blue screen others) ,BUT on EP tapes it displays a picture but
>alignment is needed (I've ordered the service manual;this thing is
>starting to cost me big time).Now HERE'S THE CLUE.In FF search mode
>the picture comes in on SP tapes with the usual noise bars in cueing.
>
>I've scoped the RF envelope and it looks like one of the heads isn't
>putting out a signal (pre-amp defective ?).
>
>Is servo circuit defective ?
>
>Also I tried recording at both speeds =garbage.
>
>Can someone please steer me in the right direction .
>
>Thanks
Adonis
I've removed the head cleaning pad (could this have caused the
damage?) and checked the arm on the right side ,it's fine,but I found
the ace head assembly was sluggish and in fact didn't always return by
spring action to it's natural position.I greased this part .
I'll work on the machine some more this week-end and let you know
what's up.
Andy Cuffe
The A/C head doesn't need to be able to turn freely as long as it stays
in position. The only time it will ever move is when it's being
adjusted.
--
Andy Cuffe
balt...@psu.edu
Bill Samuel
Andy Cuffe <balt...@psu.edu> wrote in article <36152F...@psu.edu>...
I believe he's referring to the P-5 arm that positions the tape across
the ACE head.
I think every one in this area has been across my workbench with this
problem. <GGGG>
Bill
Adonis
<rud...@icpdd.neca.nec.com.au> wrote:
>If this unit has auto head cleaner, take it out.
>
>Then clean the head and it should be OK.
>Head cleaners, from my experience, caused many similar problems on SONYs.
>
>Rudolf
>
I wish it was that simple Rudolf.Unfortunately the problem persists as
I wait for S/M from Sony.
The other thing baffling me is how come I can't get a recording in EP
but can play back EP tapes .Surely that would rule out the heads.
Is my logic convoluted here ?
Adonis
Sam Goldwasser
. I wish it was that simple Rudolf.Unfortunately the problem persists as
. I wait for S/M from Sony.
. The other thing baffling me is how come I can't get a recording in EP
. but can play back EP tapes .Surely that would rule out the heads..
. Is my logic convoluted here ?
Not necessarily. There is no guarantee that the same set of heads are
used for P and R - I would still guess a set of dirty or damaged heads.
--- sam | Sci.Electronics.Repair FAQ is back: http://www.repairfaq.org/
Repair | Mirror Info: http://www.repairfaq.org/REPAIR/F_samsites.html
+Lasers | A New Mirror: http://plop.phys.cwru.edu/repairfaq/
| An Older Mirror: http://ftp.unina.it/pub/electronics/serfit1.html
Rudolf Ladyzhenskii
Sam Goldwasser wrote in message ...
>In article <362734f2...@enews.newsguy.com> te...@home.net (Adonis)
writes:
>
>. I wish it was that simple Rudolf.Unfortunately the problem persists as
>. I wait for S/M from Sony.
>
>. The other thing baffling me is how come I can't get a recording in EP
>. but can play back EP tapes .Surely that would rule out the heads..
>
>. Is my logic convoluted here ?
>
>Not necessarily. There is no guarantee that the same set of heads are
>used for P and R - I would still guess a set of dirty or damaged heads.
Completely agree. Saw it few times -- playback and no recording due to th
bad head.
Rudolf
Adonis
wrote:
>In article <362734f2...@enews.newsguy.com> te...@home.net (Adonis) writes:
>
>. I wish it was that simple Rudolf.Unfortunately the problem persists as
>. I wait for S/M from Sony.
>
>. The other thing baffling me is how come I can't get a recording in EP
>. but can play back EP tapes .Surely that would rule out the heads..
>
>. Is my logic convoluted here ?
>
>Not necessarily. There is no guarantee that the same set of heads are
>used for P and R - I would still guess a set of dirty or damaged heads.
>
> --- sam | Sci.Electronics.Repair FAQ is back: http://www.repairfaq.org/
> Repair | Mirror Info: http://www.repairfaq.org/REPAIR/F_samsites.html
> +Lasers | A New Mirror: http://plop.phys.cwru.edu/repairfaq/
> | An Older Mirror: http://ftp.unina.it/pub/electronics/serfit1.html
Well ,that's news to me.I'll wait and see what service manual reveals.
Thanks for your help,BTW.
Raymond Carlsen
> >. but can play back EP tapes .Surely that would rule out the heads..
> >. Is my logic convoluted here ?
> >
> >Not necessarily. There is no guarantee that the same set of heads are
> >used for P and R - I would still guess a set of dirty or damaged heads.
I've seen a partially clogged CTL head produce that symptom. How could you
get a good EP playback with clogged EP video heads? In a four head machine,
the same heads are used for recording as playback. They may use different
heads for special effects, but record and play use the same heads. If it's
a two head deck, a good playback picture rules out the video heads. By the
way, my email to this guy bounced. Sam is right. Ask here, read it here.
Ray