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Sony Trinitron KV28LS60B Problem

When TV is switched on it works for a short time, then menues flash on screen and red light flashes continuously, the remote will not work now, the picture and sound have gone. Sometimes red light stops flashing and TV returns to normal but usually I must turn off power manually, leave for a few minutes and switch on again. The length of time for which it operates normally is getting shorter(10 mins). Sometimes when menu appears the picture and sound remain but not usually. Does this look like a serious problem. The TV is 4 years old. Hope you can help Diarmuid Byrne

Posted by Diarmuid Byrne on

  • Anonymous May 10, 2008

    el tv Kv 29LS60 E es eque tengo en mi taller al rato de estar fucionando aparece el menu de y diomas sobre la imagen, parece ser que lo que esta mal es el modulo de memoria yo e repasado todas las soldaduras allacentes al modulo y revisado los elctroliticos.de alimentaciĆ²n

    donde asquiero este modulo en espaƱa

    micoreo"[email protected]

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5 Related Answers

Simpson Neal

  • 236 Answers

SOURCE: no sound or picture now

The set may have shorted the horizontal out put transistor since it kept coming on sometimes. This could be cause by the driver transformer arcing causing a "spike" in voltage going to you horizoltal out put transistor. Stargazer

Posted on Apr 10, 2007

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Anonymous

  • 326 Answers

SOURCE: No picture, sound works on Sony TV

Hello, maybe there is a contact error in power supply or the deflection stage. If the resoldering does not help- here are some possible solutions: remedy Replace flyback location LP04. Entered for KV32S22 /SONY (Chassis) remedy 2 Replace IC351, Q602, Q601 (2SC4834M), R607 (1R/0.5W), R622 (10R), IC641 (SI3090CA) and Q502 (2SC5148). remedy 3 Replace tuner. remedy 4 Replace R607, Q502 and IC601. Entered for KV32S22 /SONY (Chassis) remedy 5 Replace regulator IC, R607, check C609, C610 (0.68pF) and C613 (0.0022pF/500V). remedy 6 Replace horizontal output transistor (2SC5148), IC601 (MX0841) and R607 (0.1R). remedy 7 Replace IC1701 and IC601. remedy 8 Replace Q501 (2SC5148), R607 and resolder horizontal driver transformer. remedy 9 Check and replace horizontal output transistor Q502 (2SC5148) and IC601 (MXD8411AB-F). remedy 10 Replace shorted R607. Also check T501 and Q501 for dry joints. remedy 11 Replace C608. remedy 12 Replace Q602 and D648. remedy 13 Replace Q502, Q601, Q602 and R602. Entered for KV32S22 /SONY (Chassis) remedy 14 Replace D626 (6.2V). remedy 15 Replace IC801 and R607. remedy 16 Replace horizontal output transistor and the associated damping capacitor. Check flyback transformer and SMD microprocessor as well. remedy 17 Replace R639 (4.7R/0.250W) located on G board in standby power circuit. remedy 18 Replace D600. remedy 19 Replace C502 (0.47uF/50V). remedy 20 Check D655(1N4937), D657 (1S1834) and Q601 (2SC4423). remedy 21 Check D606 for leakage. remedy 22 Check yoke between vertical and horizontal windings for S/C. remedy 23 Replace Q601 (2SC4834MNP), R607 (0.1R) and C517 (2.2uF/250V). remedy 24 Replace R611.

Posted on Apr 22, 2007

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retrorecycle

  • 29 Answers

SOURCE: Sony kv35s66: No picture, just sound and red blinking

The most common problem (I have fixed lots) is the Vertical amplifier has developed a loose connection. It probably just needs resoldering. As things expand it makes and looses connection you picture goes in and out. The vertical chip is a large black chip that gets hot, over time it degrades the solder until a connection is damaged. Most newer sets have a protection circuit that senses the lack of height, and shuts down the picture tube to save it. When the picture dropped to a line on older TVs and left that way too long it would burn a line into the face of the picture tube. You then had to have the picture tube replaced along with the vertical amp. it's kinda like a screensaver for your TV.

Posted on Feb 02, 2008

Anonymous

  • 4234 Answers

SOURCE: Sony Trinitron Color TV KV-35V65 - No Picture, red light stand/by timer flashing

A reset won't fix this. The standby light should be blinking a repeated count with a 3 second pause inbetween. Post that count here. That will indicate the circuit/condition that is preventing the set from turning on.

Thanks,
Dan

Posted on Jul 18, 2008

Anonymous

  • 252 Answers

SOURCE: Sony Trinitron KV-24FS100 red light flashes 4 times

your tv had a problem.if you have a knowledge in electronics, check or replace the horizontal transistor beside the plyback. it is a black square parts with 3 pins.

Posted on Oct 14, 2008

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