Question about Sony KP-53XBR200 53" Rear Projection Television

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Kp-53hs30 the picture is good then it is barely visible and dark, Time does not make a difference. IK voltage drops from 8.5 v app. to about 4 volts on the base of Q353

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  • Jack Bowser Mar 04, 2009

    It is a rear projection tv it does not have a back light. sorry

  • Jack Bowser Mar 04, 2009

    I have replaced the D board, the convergence chips is located there, and the problem is still there,

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Hi...your convergence IC's have gone bad.
These IC's operate at a very high temp, and usually only last 4-5 years.
If you remove the back of the set, you will want to look for the BIGGEST heatsink in there, on that heatsink, you will see 2 large IC's , probably STK392-040, or STK392-120's or something close...regardless - you can go on ebay to order the new ones, but MAKE SURE they are Genuine SANYO IC's and not counterfiet cheapies. the cheap ones may only last 2 months..
You will also need some "Heat transfer paste" - you can pick this up at radio shack.
Once you remove the old IC's, test all the large resistors near them.. pull one side of the resistor out of the board so you can check it out of circuit. they will usually have the value in Ohms, printed directly on the resistor, but you may have to use the resistor color code to find out what value they are....However, usually if there is any damage, the resistor will look like it has been HOT or fried. replace the IC's and any bad resistors, and you should be good to go.
If after replacing the IC's and any defective resistors, the convergence is still bad, make sure to use a multimeter to check ALL fuses on the boards, --- sometimes when the IC's go, they will take out a fuse to the convergence power supply. If you find any bad fuses, replace them accordingly!
Hope that helps u alot...

thank u!!!

Posted on Mar 04, 2009

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The backlight is malfunctioning, and will probably need to be replaced.

Posted on Mar 02, 2009

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Sony kp 53h530 no picture or sound red light blinks 6 time stop and restart


he 6 blinks indicates the loss of 5 volts on the emitter of Q714 on the A Board. This 5 volts
is supplied from
the 5 volt regulator IC 2 (A Board) which receives 6 volts from the G Board.

It can be from alot of things better bring it to technical service its class A it heavy for do it your self :((( you can order the boards but they will cost alot

Oct 07, 2010 | Sony KP-53HS30 53" Rear Projection...

1 Answer

Red Lines through picture when screen is dark, back ground has a red tint. On my 48 "Sony Rear Projection" TV


You can try adjusting the Red color output. (Very touchy adjustment)

If you take off the front cover/speaker cover, there should be a access panel. Behind that, there should be a small square black box with 6 screws on it. This is the focus block. (At least this is where most of them are located)

It sounds more like you may need less red in the mix. There is a screw for each color. R, G, and B. Do not mess with the focus screws, just the ones labeled 'SCREEN.'

Go to an unused input where the screen should be dark. Barely turn the red down in a dark room so that the red spot is at the same level as the Blue and Green.

Use an insulated screwdriver and DO NOT TOUCH the focus block and ESPECIALLY NOT the back of it.
Very HIGH VOLTAGE. I found that out the hard way.

Do not turn any of these up too high or damage may occur and the TV may detect a short and shut off.

I have found that if the three colors are adjusted in a dark room to where the 3 color spots (R/G/B) are just barely visible on the screen at equal levels, there is a pretty good color balance.

I hope this helps! Just be careful.

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3 Answers

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Although the other response is in much better technical lingo, it sounds to me like the television had a high voltage arc which I have seen on quite a few of the sony big screens lately. Usually, it causes a part on the circuit board, (one of many that were listed on prev. solver's list) to fail. This causes a delimma for the repairman, because when they find the bad part and replace it, sometimes it will pop again causing repeat failure of boards and/or parts on the board. Sony is known for having bad tubes on their projection sets, and it can be a difficult repair even for a trained tech. I suggest calling a sony service center in your area, and get an accurate estimate before deciding if replacing the set is the best idea. Hope this is helpful input, Russmann.

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1 Answer

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do you think you can take a picture and send it to this website

Aug 08, 2008 | Sony KP-53HS30 53" Rear Projection...

1 Answer

Status light blinking


your flyback is bad on the D board thats what makes the led blink 8 times replace the flyback and you should be fine. If you need a link on where to get the flyback and instructions on how to change it let me know and I will post a link

May 25, 2008 | Sony KP-53HS30 53" Rear Projection...

1 Answer

Sony KP-53HS30


Yesterday I got the same with RED color.
I guess ptoblem is with Hi voltage multyply HVB-1031//x.
Not sure yet... still looking for info

May 02, 2008 | Sony KP-53HS30 53" Rear Projection...

2 Answers

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sent the info to your email address

Mar 31, 2008 | Sony KP-53HS30 53" Rear Projection...

2 Answers

Picture is Rolling..stops after some warm-up


I have seen this many times. There is a 9 volt regulator on the small signal board that causes this. The regulator goes bad and the 9 volts starts dropping, especially at start-up when the regulator is cold. If the voltage is below 8 volts then the picture gets dark and the vertical becomes unstable, with the picture squeezing down and/or rolling. As the regulator warms up the voltage starts rising back towards 9 volts and the symptoms start clearing up. There are 3 regulators in a row on the board and the regulator in the middle is always the bad one. Replacing that regulator should cure your problems but it should be replaced by someone experienced in servicing Mitsubishi projection TV's because pulling the chassis out is quite tricky.

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1 Answer

The dark colos have a lil' green on them...why?


How old is this set? Sounds like a CRT issue, might be able to adjust the G2 control (SCREEN), you will have to pull the bottom pannel off the front and there should be another little 1/4" thick board that comes off with a few screws and then a 6 knob control, turn your color all the way off in the menu and adjust your screen controlls up till you get some overcolor with lines in it and then back down just before the lines (MAKE SURE YOU DEFAULT ALL YOUR USER MENUS) check that you have a black and white picture after adjusting all 3 screen controls like before with the menu color off. If you have a bad CRT it will go again, the CRT may no longer be available, if the set is not too old i.e. 5-8 years old it may be a defect with multiple CRTs.

May 22, 2007 | Sony KP-53HS30 53" Rear Projection...

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