Question about Toshiba 50H81 50" Rear Projection Television

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Replaced stks and still no pic no sound

I have replaced the ics fuses all good set will light the red led for 2sec then start to blink again any ideas need more help

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Remove conector P807, if set stays on the replacment IC's are bad. also check D428=5035a and Q371=2sa9335.

Posted on Jan 09, 2009

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61uwx10ba. no power to any boards but power supply.


have you reched around the new soldering area carefully, check for solder spills or drops in the printed circuit, also another thing to look for is some of those replacement stk do not hold their weight, you might want to take them out and try the old ones to see if you recover tv power.

Jan 15, 2010 | Hitachi 61UWX10B 61" Rear Projection...

1 Answer

Hcn4727w samsung red lights blinking but no picture or sound and no noise coming from tv whats wrong?


Replace both of your STKs and CK 2 resistors 2.7ohms STKs will have part number on them STK392-110s ect....they are big black ICs.

Aug 14, 2009 | Samsung Projection Televisions

1 Answer

Tv red light blinks off and on. Unplugged for an hour Tv worked for 10 monutes and then picture went to top left corner and got blurry. TV HAS BLINKING RED LIGHT AGAIN.


Replace Both of your convergence ICs one is bad ,but replace both STKs big black ICs also CK two resistors in same circuit 2.7ohms

Aug 11, 2009 | Samsung HCM4215W 42" Rear Projection...

1 Answer

Blinking red Light


Hi, thank you for visit fix ya.
Common problems on this tv ( cause no power):
1.- Loose connection between connectors and cool solder around fly back. ( re solder all).
2.- IC vertical output and capacitor in same section ( 100uf, 220uf,3300 uf and 2.2uf ), replace all.
3.- STKs ICs convergence , need be replace ( check any resistor around STKs, for burn or brown color).
----- Try to do step by step; you will repair your tv.
I will be here for any future question.
Thank you

Jul 17, 2009 | Toshiba 50A60 50" Rear Projection...

1 Answer

Samsung p4241w HDTV will not turn on flashing red light.


Replace both of your STKs when 1 goes bad it will shut set off STK392-020s or 040s use same number that is on your STKs big black ics these control convergences also.

Dec 20, 2008 | Samsung Projection Televisions

1 Answer

Panasonic 53wx42


Replace your STKs 392-110s There is 2 of them use the STK382-180s better ics.

Dec 08, 2008 | Panasonic PT-53WX42 53" Rear Projection...

1 Answer

Akai pt4299hd


replace your STKs big black Ics STK394-250 there is 2 of them thses are your convergence ics.Also ck resistors and pico fuses.

Jul 22, 2008 | Akai PT4799HD Rear Projection Television

1 Answer

53UWX10B


Good Day, Butchilee,
Sounds like you have patience, hope your TV has some trace left. Hit recommends that you replace the originals with
STK-392-150's and the resistors. Replace said items with care then back down on the screen/ focus controls and gradually bring the screens up until you have pic, adjust focus. Go into customer menu and adjust color down, set brightness to 50%, contrast to 100%. Then go back and adjust the screens for proper, black/white, tracking. AND It's best to double check the soldering connections.
Good Luck, Big Irish.

Jul 04, 2008 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

No picture, but red light on front comes on


If one your convergence IC's is bad then you will still see a picture but the colors will not line up, especially around the edges. I have never seen a Toshiba projection set completely lose the picture because of a defective convergence IC. If your vertical output IC has failed or cracked loose then that is exactly what you will see - no picture! The vertical output IC is usually on the same board as the convergence outputs which explains why it worked last time, even if the tech was not 100 percent accurate in knowing exactly what was wrong - he just changed everything. Resolder that vertical output IC and make sure it is getting power. If you still have no picture after that then have a qualified tech look at the set.

Jul 12, 2007 | Toshiba 46H84 46" Rear Projection...

14 Answers

TV is not powering up and red light keeps flashing


I had the same red blinking led problem on my Toshiba Theaterview tv. I resolved by:
- Unplugging the tv.
- Press several times (3 or 4 times) the tv Power button.
- Plug the tv back in and press the Power button once to turn the tv on....tv worked!!!

I've had the problem before and tried unplugging the tv for a couple of days and that had also worked, but I this recent solution seems to be faster.
Good luck!
Erick

Jul 29, 2006 | Toshiba 55H70 55" Rear Projection...

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