Question about Philips Magnavox 51MP392H Rear Projection Television

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Sound but no picture.

Where do I find the Transitor to test and see if this is the problem?

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  • Philips Master
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This may be the same IC that goes out all the time. Symptoms vary. Check www.magnavoxhelp.com for repair kits.

Posted on Jun 29, 2008

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I have replaced a capacitor, transitor, and a diode as was described to me by repair world this is on the deflection board, now it turns on and works but it has an hour glass shape to the picture the side...


thats a pin cushion problem. I would check for more bad caps on the deflection board or open resistor. Sounds like you had an issue with the retrace cap CL031 and the HOT transformer and possibly the DL030 often if they fail bad enough the circuit board can actually burn through and that arc can travel and cause other items to fail. You may end up having to replace the deflection board to fully fix the issue of pin cushion that your experiencing now.

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My Zentith D60WLCD has a green tint


some transitor is gone bad,you better send it for repair

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1 Answer

Sony KP-57WS500 57 in. Rear Projection tv When I press the power button there is no picture but the "timer / Standby" light flashes. Sometimes when pressing the power buttonthe light flashes and I hear...


CK your hori output Transitor and behind it is a blue high voltage capacitor 2k sometimes they will have small burt hole on them ,If it is OK then Replace your STK ICs example STK392-110 Mats has them 1-800-628-1118

Feb 15, 2010 | Sony KP-57WS500 57" Rear Projection...

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Blinking light without picture on Toshiba 57H81


No good news here sorry!

Power board and video X and Y boards need intervention If you are going to take a look you will find that one or even both boards have blown capacitors and burn marks along the transitor

You might be able to claim it as fusion on your insurance policy ( parts only usually) but thyat at least is some relief


Please rate our help to kepp the FREE service online ++++

Aug 31, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Have a RCA 60" rear projection tv. Went to turn it on, no picture no sound, give three faint bleeps and turns back off. Have not had time to get the chassis or SN # but will do so ASAP. Any suggestions?


bleeps? sounds? flashing led, sounds like you have the dreaded processor shutdown. As a technician i see this every day at the shop. First advice i give (which never works) unplug the set and wait 30 min to try again. If the front led lights you can be sure of one thing. it not the fuse. this means the processor is seeing a problem and shuting the set down before it causes a fire. It can be one of about 20 different cuircits. In the shop we plug it into a computer to read error codes much like a car. the highest probability is high voltage ...flyback horizontal output transitor. It take a technicain and voltage checks to narrow it down.

Jan 15, 2009 | RCA D52W19 52" Rear Projection Television

1 Answer

Mitsubishi VS 50707 ( not 705)


I have the same TV built in 99. My problem is similar but the vertical hold gives out when the tv warms up about 5 minutes. I will attempt to locate the vertical hold circuit and replace any parts I suspects may be the problem. I suspect a cap is leaking or transitor around IC700 is degrading when warm.

Jul 31, 2008 | Mitsubishi VS-50705 50" Rear Projection...

1 Answer

TV will not power up. Fuse is good


HELLO. IT'S SOUND'S LIKE YOU HAVE A BAD HORIZONAL OUTPUT TRANSITOR. AND MAYBE A BAD FLY TRANSFORMER.HOPE THIS HELP'S YOU ."GOOD LUCK"

Jul 15, 2008 | Hitachi 50UX58B 50" Rear Projection...

2 Answers

Sony KP-53S75 53 in.--no power & no sound


Good Day,

Dead set , more than likely the TECH that came out is correct.It is common for this unit.
It seems though, that you questioning the repair cost. To me that repair cost is very, very, very good.
Technician's are experience people in their field, like a DOCTOR, it is not the time but the schooling and experience that you are paying for.

Good Night, big IRISH.

Nov 02, 2007 | Sony KP-53S75 53" Rear Projection...

4 Answers

Unit power up have sound but no picture.


Check the damper diode and the protection resistor in the High Voltage circuit. Good Luck.

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