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

T

tem00

Jan 1, 1970
0
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
 
I

ian field

Jan 1, 1970
0
tem00 said:
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!).
 
J

Jason D.

Jan 1, 1970
0
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
 

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