RCA CTC 203CX

Read what was sent to you yesterday...

did you send something ....?? I am not seeing my message on this newsgroup.. did a search for my message and didn't find it that way either.... thanks Kanen

Well you are doing something wrong...

I don't see any other responses from Kip, either.

What else have you replaced besides Q4401? IME, it's rare for the HOT to blow without anything else either causing it or being taken out by it. I don't have a service manual in front of me, but there are some caps in parallel with the HOT side of the flyback that should be replaced at the same time. If they fail, they cause a huge voltage spike that will blow the HOT again. Sometimes right away, sometimes in a few months.

However... that audible squeal is bothersome. How is the B+ voltage, and the standby voltages? That should not be an overload, after all the TV draws one or two hundred watts when on and doesn't make squealing noises normally.

I can't find my message on the group posted on the 24th, that's why I reposted..... so I am also not getting any answers that were posted in reply to my message.... Don't know why my post from yesterday is not showing up on my computer. Karen

Oh, I get it now. This is a repost, and Kip replied to your original.

So what about what Kip and I said?

And are you Karen or James?

Here is Karen or James origional post and Kip's response:

Did you remove the little choke near the Q4401 ( L14401 ) clean the holes and remove the glue then reinsert. This is famous for blowing the Q4401. and so are the Flybacks.

--
Tony Marsillo
Nutmeg Repair
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 wrote in message 
news:1130362577.127135.7360@z14g2000cwz.googlegroups.com...
> Oh, I get it now. This is a repost, and Kip replied to your original.
>
> So what about what Kip and I said?
>
> And are you Karen or James?
>

Did you remove the little choke near the Q4401 ( L14401 ) clean the holes and remove the glue then reinsert. This is famous for blowing the Q4401. and so are the Flybacks.

Yes this was a repost, as for some reason only Kip seems to be able to see the original, I can't find it anyplace on the group, and hence did not receive any responses to my question.

To clear up the James/Karen thing, it is the both of us, I am the owner and James is the tech/my DH. I do the typing/posting, Other office stuff) and he does the repairing. Hope that clears up the misunderstanding.

He is going to try what Kip said and we'll let you know what happens...

He is still not sure about res. 4509 220 ohms, it was burnt to the point that we could not read the colours, don't have schematics, he hopes it is red red brown not red red red. The colours are hard to make out as the res. was so bad. It's like art sometimes, even under all the lights in the shop.

thanks Karen & James

I don't have a service manual for that set, I see a free download for CTC203AA5 and AA9 on this site:

It shows R14509 on the 14.3V line, off of CR14704, which comes from pin

6 of T14401. Does that ring a bell? In this set, it's 300 ohms at 2W and seems to be just there to drain C14711 when the set is turned off.

One of the hazards of working as an independent contractor- no access to service manuals at home.

Yep, shading on color codes can be slightly different shades from one maker to the next, even. I favor the sunlight fluorescents, because "soft white" tubes put out an orangish light similar to incandescent.

Oh, yeah, I always resolder the HOT driver transformer.