Sony SLV-SE820 bad recording

[Neven]

Hi,


I have Sony's VCR, model SLV-SE820.

When playing back just recorded tape
i got picture with bad vertical sync.
Vertical sync is okay only about 3-5 secs close to an end of recording.
Playback of previously recorded tapes (before above malfunction) is ok.


I'm generally quite handy with electronics, but i have never repaired vcrs.

I have excluded the mechanical parts as also the recording heads to be
the cause of malfunction.

Reading some forums with other vcr's similar problem,
i've read on possibility on bad micro IC, or leaky electrolites.


Can anyone please direct me to possible problem solution?


Many thanks,

Neven

 

[Damir]

On Sun, 7 Sep 2003 12:10:16 +0200, "Neven" <neven.petrlik@zg.htnet.hr> wrote:

Hi,


I have Sony's VCR, model SLV-SE820.

When playing back just recorded tape
i got picture with bad vertical sync.
Vertical sync is okay only about 3-5 secs close to an end of recording.
Playback of previously recorded tapes (before above malfunction) is ok.


I'm generally quite handy with electronics, but i have never repaired vcrs.

I have excluded the mechanical parts as also the recording heads to be
the cause of malfunction.

Reading some forums with other vcr's similar problem,
i've read on possibility on bad micro IC, or leaky electrolites.


Can anyone please direct me to possible problem solution?


Many thanks,

Neven

Check and clean sync head once again.

--------------
Regards,
Damir
--------------

 

[Loren Coe]

In article <bjf06d$766$2@ls219.htnet.hr>, Neven wrote:

Hi, > > > I have Sony's VCR, model SLV-SE820.
When playing back just recorded tape > i got picture with bad vertical sync.
Vertical sync is okay only about 3-5 secs close to an end of recording.
Playback of previously recorded tapes (before above malfunction) is ok.

I'm generally quite handy with electronics, but i have never repaired vcrs.
I have excluded the mechanical parts as also the recording heads to be
the cause of malfunction.

Reading some forums with other vcr's similar problem,
i've read on possibility on bad micro IC, or leaky electrolites.
Can anyone please direct me to possible problem solution?
Many thanks, > > Neven

hmmm, sounds like you want an 'Easter egg'? vcr's, being almost
throw away items now, it's not likely that you will find it.
but that is a good idea, anyway, vcr's are not for casual repair
folk, i speak from experience (as one myself .

maybe there s/b or actually is an Easter Egg List somewhere? it's
a great idea and perfect for the web. lot's of Bud ird problems
were identified and posted by brand, model, and fix. this was
some years ago before the current archiving sites started up.

Sam, maybe you have an idea along these lines? --Loren

 

[Neven]

I agree with you.
It's difficult, without grip and everyday's experience.
I've done TV repairs in past, but today i'm a bit lost - lack of practice
and lack of everyday's problem solving done its job.

'Easter Egg list', as you call it, would be of help,
that's certain.
Bad thing is a bit of dissapointment i have, in Sony as brand,
especially when their TV's and VCR's go bad, just couple of weeks after
warranty period.
Still, electronics repair have it's own charm, it always will.

Thanks everyone,
any comments on 'synchro' problem would be appreciated


Neven.

"Loren Coe" <loren@netnews.attbi.com> wrote in message
news:mOZ6b.287206$cF.89330@rwcrnsc53...

In article <bjf06d$766$2@ls219.htnet.hr>, Neven wrote:

Hi, > > > I have Sony's VCR, model SLV-SE820.
When playing back just recorded tape > i got picture with bad vertical
sync.
Vertical sync is okay only about 3-5 secs close to an end of recording.
Playback of previously recorded tapes (before above malfunction) is ok.

I'm generally quite handy with electronics, but i have never repaired
vcrs.
I have excluded the mechanical parts as also the recording heads to be
the cause of malfunction.

Reading some forums with other vcr's similar problem,
i've read on possibility on bad micro IC, or leaky electrolites.
Can anyone please direct me to possible problem solution?
Many thanks, > > Neven

hmmm, sounds like you want an 'Easter egg'? vcr's, being almost
throw away items now, it's not likely that you will find it.
but that is a good idea, anyway, vcr's are not for casual repair
folk, i speak from experience (as one myself .

maybe there s/b or actually is an Easter Egg List somewhere? it's
a great idea and perfect for the web. lot's of Bud ird problems
were identified and posted by brand, model, and fix. this was
some years ago before the current archiving sites started up.

Sam, maybe you have an idea along these lines? --Loren

 

[Neven]

I did the cleaning with scope first thing when i've encountered the problem.
But, logically - if i have 4 heads on drum of which 2 are for play/record on
SP, and
other 2 for LP.
Outside the drum, full erase head and audio+sync head.
Bad vertical synchro on recordings is happening on SP as also on LP.
I've cleaned and checked the synchro head 2 times, it's clean, cannot be
cleaner.

I've decided to give the vcr to a friend who works in vcr/tv repair service.


"Loren Coe" <loren@netnews.attbi.com> wrote in message
news:Nfh7b.399010$YN5.263991@sccrnsc01...

In article <bjipir$75i$1@ls219.htnet.hr>, Neven wrote:
I agree with you.
It's difficult, without grip and everyday's experience.
I've done TV repairs in past, but today i'm a bit lost - lack of
practice
and lack of everyday's problem solving done its job.

'Easter Egg list', as you call it, would be of help,
that's certain.
Bad thing is a bit of dissapointment i have, in Sony as brand,
especially when their TV's and VCR's go bad, just couple of weeks after
warranty period.
Still, electronics repair have it's own charm, it always will.

Thanks everyone,
any comments on 'synchro' problem would be appreciated
Neven.

it sounds from your description that it can play previously
recorded tapes but not current ones? if yes, then make damn
sure those heads are clean, _all_ of them. us a magnifying
scope to check them.

if they get loaded bad enough, a cleaning tape is worthless,
you have to manually clean them. --Loren


"Loren Coe" <loren@netnews.attbi.com> wrote in message
news:mOZ6b.287206$cF.89330@rwcrnsc53...
In article <bjf06d$766$2@ls219.htnet.hr>, Neven wrote:

Hi, > > > I have Sony's VCR, model SLV-SE820.
When playing back just recorded tape > i got picture with bad
vertical
sync.
Vertical sync is okay only about 3-5 secs close to an end of
recording.
Playback of previously recorded tapes (before above malfunction) is
ok.

I'm generally quite handy with electronics, but i have never
repaired
vcrs.
I have excluded the mechanical parts as also the recording heads to
be
the cause of malfunction.

Reading some forums with other vcr's similar problem,
i've read on possibility on bad micro IC, or leaky electrolites.
Can anyone please direct me to possible problem solution?
Many thanks, > > Neven

hmmm, sounds like you want an 'Easter egg'? vcr's, being almost
throw away items now, it's not likely that you will find it.
but that is a good idea, anyway, vcr's are not for casual repair
folk, i speak from experience (as one myself .

maybe there s/b or actually is an Easter Egg List somewhere? it's
a great idea and perfect for the web. lot's of Bud ird problems
were identified and posted by brand, model, and fix. this was
some years ago before the current archiving sites started up.

Sam, maybe you have an idea along these lines? --Loren