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An expert who has answered 20 questions.
Re: RCA 13R400TD 13"
It's a sign of a failing capacitor or transistor. It is not user serviceable part. The problem is intermitent but will exhibit itself after the unit has been on for sometime. Warranty of these units are usually 90 days labor and 1-year parts. On a sale, a 13" TV can be bought under $75. May not be worth repairing especially when a service facility charges diagnosis fee to open and zero in on the problem.
On your next TV purchase, you may want to register it here at fixya and avail of their extended warranty.
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They say " beauty is in the eye of the beholder " ! At times,
I have older customers that want wooden floor models,but it
is a rare request.......older sets generally are not compatible
with modern equipment, therefore they have very little actual value or merit............if you could get a few dollars and the
recipient of the old-timer is satisfied...that's the ticket !!
TDA 8362B IC which have vertical freq.output is at pin no.43. (vert.osc)
for fixing this problem minimise brightness to avoid crt burn.
proceed as follows
1 if you are getting sawtooth at output of ic tda 8362 pin 43 then check
1 supply at vertical output ic from eht.
2 yoke connector loose .
3 check vertical output ic parts.
4 finally vertical ic.
please check for normal output from power supply even though fault gets rectified just for protection.
The curved picture indicates failing parts in the pin amp section and probably some faulty parts in the scan amplifier sections. The set is being turned off by the uPC because there is a fault indicated, and it is going in to protect mode.