Question about Sony KP-53XBR45 53" Rear Projection Television

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Kp-53xbr45 power up problem - led flashes once then turns off

Okay, I've been working on my sony kp-53xbr45 projection for a bit now and I can't seem to find the problem. The television gets a solid red led flash and then a really short quick second and then nothing. I noticed that I have to turn the tv off with the remote before I can repeat the cycle. I checked all the boards for bad solders, the flyback transformer and HV block have been changed (the first repair man damaged the wire when trying to uninstall). I checked the transistors and nothing is shorted. No fuses are blown on any of the boards. Q806 and Q510 are both okay. I noticed that q806 shows short circuit from base to emitter while on the board, but when taken off and tested it is fine. There was an electrolytic capacitor (10mf 160v) that had an esr reading of 6 ohms on the circuit, and beyond the scale when I took it off. I replaced it with a new one (less than 1 ohm esr). There are no bad resistors that I could find. When I plugged it in the variac, the units relays click on at around 68 volts. When at the full 120v, using the remote to power up the set, the power turns on, led turns off once, turns on again but shuts off really quickly. I could hear the static from the crt's as the tv turns off. Anyone have any suggestions for me on this one? I'd really like to get it working for the bowl games!

Posted by alex ryan on

  • Anonymous Dec 11, 2007

    I have this same problem. The television gets a blinking red led light on the standby mode. I noticed that I have to turn the tv off with the remote before I can repeat the cycle. I have tried to unplug the tv for several hours too. Any ideas?

  • Anonymous Mar 27, 2008

    [email protected] i have the same problem as utdude2005

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Anonymous

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Hello, I recomend to disconnect all the board one by one and clean all the connectors. RSC

Posted on Feb 17, 2007

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2 Answers

Need part # KP-53XBR45, convergance IC


The convergence ICs are STK392-010, the locations are IC1601 and IC1602.

Apr 18, 2010 | Sony KP-53XBR45 53" Rear Projection...

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I hope that helps.
___________________________________________

on Jul 04, 2010 | Televison & Video

Tip

Sony KP-53XBR45 Service Manual Download


Download Sony KP-53XBR45 Service Manual

1bf8dc4.jpg

Would you like to download a free Sony KP-53XBR45 Service Manual?

Have you lost your Sony KP-53XBR45 Service Manual?

Would you like a digital, searchable, pdf version of the Sony KP-53XBR45 Repair Manual?

Follow this link (& click FREE) to download a pdf version of the Sony KP-53XBR45 Service Manual documentation.

I hope that helps.
___________________________________________

on Jul 04, 2010 | Sony KP-53XBR45 53" Rear Projection...

2 Answers

Sony KP-53XBR45 i have a bad convergence board. Do I fix it or replace it. Where is the part available


Hi,
Replace convergence out ICs to get it fixed.
You can replace these chips if you can replace parts in circuit board with proper tools or ask local tv tech.
Required ICs are available with Part Store.
Thanks.

Mar 19, 2010 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

Sony rp tv kp-53xbr35 wont turn on


YOu may need to replace the bulb in the unit, check the bulb and if blown, you need to replace and after replacing reset the lamp time hours. Good luck.

Nov 14, 2009 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

Sony KP53XBR45 Customer was watching it and the picture just whent out but still had sound. Now when press power button the LED light flashes 7-times and won't turn on. Any suggestions? Thanks, Alltech...


Are you getting sound? If not, then your power supply is faulty. If you sound but no picture, then an IC or STK capacitors are faulty depending on what type of tv it is.

Sep 23, 2009 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

Sony KP-53xbr45 problem


on your model which is a RA-1 chassis the power light blinking steady just means the standby voltages are operating, so you will need to trouble shoot the power supply. you will either need the service manual or training manual to trck down the faulty component.

Jun 22, 2008 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

Home theater reception


you need to unlpug your set and reconnect everything over and see what it does.if that does not work have a tech check your system.your sony recviever is the culprit let that be checked.good luck

Apr 05, 2007 | Sony KP-53XBR45 53" Rear Projection...

1 Answer

I Turn on it turns itself off....


I have the same problem, haas anyone got it fixed yet?

Sep 13, 2006 | Sony KP-53XBR45 53" Rear Projection...

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