JVC AV2650S TV vertical deflector circuit - (need help pleas

[Rick B]

This is a 26" JVC TV (AV2650S) manufactured in 1990 that worked well
until recently, and I hate to dispose of it if it can be repaired. I
have a good working knowledge of electronics and would like to attempt
repair myself. The vertical began intermittant failure a month ago, but
the problem would usually go away after warming up for about 10 minutes.
I had read that this was most likely due to an old electrolytic
capacitor that needs replacing. Now the vertical is completely dead and
only a centered horizontal line remains even after warming up. I have
removed the main PCB and have found no obviously cold solder joints and
all components seem secure and intact. Although I have located the IC
and nearby caps for the vertical, I am not sure which components apply
only to the vertical circuit.

Any suggestions would be greatly appreciated.

Thanks,
Rick

 

[Art]

Vertical ic should be a part # LAXXXX and be attached to a the heatsink with
a screw. Asscoiated caps will be in the same physical circuit as that ic.
BTW ther may also be caps in the power supply circuits that need attention
due to age. You can follow the leads back from the yoke conector on the pcb
to the vertical circuit..
"Rick B" <rickb333@hotmail.com> wrote in message
news:C_OdnXiSPpOKXL_dRVn-gw@comcast.com...

This is a 26" JVC TV (AV2650S) manufactured in 1990 that worked well
until recently, and I hate to dispose of it if it can be repaired. I
have a good working knowledge of electronics and would like to attempt
repair myself. The vertical began intermittant failure a month ago, but
the problem would usually go away after warming up for about 10 minutes.
I had read that this was most likely due to an old electrolytic
capacitor that needs replacing. Now the vertical is completely dead and
only a centered horizontal line remains even after warming up. I have
removed the main PCB and have found no obviously cold solder joints and
all components seem secure and intact. Although I have located the IC
and nearby caps for the vertical, I am not sure which components apply
only to the vertical circuit.

Any suggestions would be greatly appreciated.

Thanks,
Rick

 

[JURB6006]

Just a tip, might work might not----

Remove all the solder from the vert IC pins and meticulously clean the pads as
well as the pins before resoldering. They might even look good.

JURB