RCA TV F31224GG / CTC169AT2 Dead

Most likely one of the outputs of the power supply section may have failed, or there is something else failed that is pulling it down, or there is a failure in one of the scan areas that is causing a no-start condition.

Without taking measurements and referencing to the proper specifications, it is impossible to make any exact determination.

To service your set you will require some of the basic tools to start with, the service manual, and a good knowlede of TV trouble-shooting.

It would most likely be more feasible for you to give the set out to a service centre for service.

Take care that there are serious safety issues when servicing TV sets.

Jerry G.

Roger:

If you need any schematics, I can send you some sections as .jpg files.

Robert McPherson

I can tell you exactly how to repair this unit... as I have worked on hundreds... I will need you to do some tests with and with out the power on...

1. with the set plug in measure vdc at C of HOT( us its heatsink for ground) if higher than 150 replace the 2.2@100v cap I cant remember the location # but it lives right next to the chopper control ic
2. test cr4118 for at least 13vdc at the cathode if it is low replace it NTE580 is fine. it lives right next to the switchmode tranx (one of the secondary supplies) do these things and let me know

A ton of bad solder joints in a 169?

Tom

By the way...very well-documented chassis, and a Google search will likely yield some answers, however...there are specific tests to be done in some cases that are outside of the ordinary run-of-the-mill tests.

Tom

Replace the PWM reg IC (TDE2261), & all the electrolytic capacitors around it, & check the horizontal output B +, & CR 4118, like the guys said. You must replace these parts, to ensure it will stay working. Sky.

I measured vdc @ C of Q4101 to hot measures 170v & CR4118 cathode measures 1.0v to cold ground.

I will poke around in my old stock but from what I see so far they use odd ball values on some of the caps so, I will probably just make a list of suspected parts & order them after the hollidays.

Thanks