Question about Sony FD Trinitron WEGA KV-34HS420 34" TV

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PICTURE AND SOUND KEEP GOING OUT AND COME BACK FOR 30 SECONDS

TV TURNS ON PIC AND SOUND FINE THEN PIC AND SOUND ON FOR 30 SEC AND OFF FOR 30 JUST KEEPS GOING BACK AND FORTH. TRIED USING DRY AIR TO REMOVE DUST FROM INSIDE TV, BUT DID NOTHING.

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One of the power supply areas are most likely going intermittent. This can be from cold solder connections on the circuit boards, or from some components failing due to age.

An experienced tech should be able to service your set, but it will be expensive for the time involved. Sometimes these types of faults can be very time consuming to resolve.

Jerry G.

Posted on Nov 25, 2008

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6ya6ya
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Picture goes on for 30 sec. then off for 45 sec.,power/standby lite then blinks.can this be fixed or thrown out.SONY KDF-E50A10


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Picture and sound come and go on antenna or dvd


Try another lamp. Error 5 is Lamp power supply, but its usually always the lamp bad.

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Turns on for 30 sec then goes bright blue and goes back into standby. turn back on it does it agian


This is blue CRT problem in tv as it is rear projection tv that has three CRTs red-green-blue inside to project color picture on front screen.
Blue CRT (tube) will be replaced to fix the issue and it is job of Pro because lots of adjustments are required after replacement of tube.
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Picture & sound go on & off every sec, red light blinks 5 times


helloFive blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

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1 Answer

T V blinks to black every few seconds otherwise works fine


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2 Answers

SOUND AND PIC GOES OUT FOR 30 SECONDS, THEN PIC COMES BACK THEN SOUND. IS THIS THE LAMP OR THERMAL FUSE OR WHAT.


The lamp is going bad. If it was the thermal fuse it would not be intermittent. It is very common for some Sony sets like yours to do exactly what you describe when the lamp is going bad.

May 17, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

We keep losing sound and picture on our TV


If you haven't replaced the lamp, it is almost certainly time to change it. A weak lamp will cause the TV to play for a short time. As the old weak lamp heats up, it draws more current, and the reflector in the lamp, having become cloudy over time, converts the light into more heat rather than reflected it out into the set. Eventually the lamp draws too much current and the set turns it off, going into a restart cycle. Buy an original Sony lamp, as the aftermarket replacement lamps are known trouble makers. Be sure to rate this solution. Thanks!

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1 Answer

No pic and shuts off


If the housing of the door comes open you will lose the sound and picture almost instantly. Have you replaced your lamp in this tv it sounds like the life on your lamp is coming to an end.

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1 Answer

Flashing lights no pic but has soung


I'm sure you've found out by now that the bulb was going bad...

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