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Toshiba CX3285A I need a schematic for Toshiba CX3285A which the chassis is TAC 9043. It has a black at the bottom at 1/2 of the screen and retrace at the rest of the picture.

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3 Suggested Answers

techman
  • 3130 Answers

SOURCE: Screen split with black bar through center, top of picture shows in bottom

It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck

Posted on Jun 14, 2006

andyroid85
  • 7 Answers

SOURCE: Toshiba 32a32 chassis tac 245 powers up for 1 secopnd then red power light flashes.

just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part

Posted on Aug 28, 2008

johnnydiode
  • 647 Answers

SOURCE: Toshiba 36A50 TV Picture Failure. When turning on

This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical. Be sure to vote/rate me if this helped Thanks!

Posted on Oct 19, 2009

Testimonial: "Thanks for your sage advise. I will get it repaired."

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just fixed one with that problem it was the vertical output ic Q301
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Postings say to be sure to use the Toshiba part

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Look for bad capacitors in the vertical deflection amp, and in the pin amp sections. This is common on most of these types of TV sets.

The caps tend to go high in ESR with age. It is best to use an ESR meter to find the bad caps. It will be a lot faster than workign out waveforms with a scope.

Wikipedia explanation about capacitor ESR:
http://en.wikipedia.org/wiki/Equivalent_series_resistance



Jerry G.

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1 Answer

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