RCA CTC169 semi-fixed, but now a jitter issue. Appreciate any help

[tem00]

Hello,

I'm not a TV expert unfortunately, but I do know some electronics from
my job. I would be grateful to anybody that could think of what could
be causing the trouble below;

My RCA 169PEB chassis went down due to a blown H.O.T. and a burned HV
splitter. I ordered the repair kit (CTC169-KIT-PTV from
Tritronics) and replaced the parts. It powers on now and B+ is about
142V. I get an image and sound, but the screen seems to vibrate and
horizontal lines are seen. Also, the sound seemed to mute itself after
set being turned on for a few minutes. comes back on when I turn
volume up or down.

I thought perhaps an experienced technician has seen this before and
could point me in the right direction.

Thanks

Thad

 

[ian field]

Hello,

I'm not a TV expert unfortunately, but I do know some electronics from
my job. I would be grateful to anybody that could think of what could
be causing the trouble below;

My RCA 169PEB chassis went down due to a blown H.O.T. and a burned HV
splitter. I ordered the repair kit (CTC169-KIT-PTV from
Tritronics) and replaced the parts. It powers on now and B+ is about
142V. I get an image and sound, but the screen seems to vibrate and
horizontal lines are seen. Also, the sound seemed to mute itself after
set being turned on for a few minutes. comes back on when I turn
volume up or down.

I thought perhaps an experienced technician has seen this before and
could point me in the right direction.

Thanks

Thad

Go over the solder joints - they may have caused or contributed to the
original failure!

If it was made with lead free solder, the joints will all look "dry"
anyway - look for a sort of grey/brown ring round any of the solder fillets
(as well as obviously cracked ones!).

 

[Jason D.]

Go over the solder joints - they may have caused or contributed to the
original failure!

If it was made with lead free solder, the joints will all look "dry"
anyway - look for a sort of grey/brown ring round any of the solder fillets
(as well as obviously cracked ones!).

Yes and no.

Stuff made after 2004 started to use no-lead solder. Checking and
resoldering joints still applies to anything.

Cheers, Wizard