Question about LG Projection Televisions

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LG 50Px5D D.O.P. Aug 07 There were three quite audible clicks 1. Full screen but image only vision 2. Second click abot ten minutes later - no vision but sound - could still change chanels 3. Third click no vision - no sound - the TV shows a green light for a few seconds when switched on but then shows the red off light. The above happened mid-viewing. All power connections checked

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Posted on Sep 30, 2008

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Samsung hlp6163w dlp tv not working, new lamp, new ballast, still three blinking lights


If color wheel does not run lamp will not fire----with lamp removed have you looked at the wheel----if not running it will cause almost instant shutdown of lamp and the set.

If the DMD board is bad time for a new set as it is well over 500 .

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The image became distorted. It is as if two of the three bulbs (assuming there are three) are working correctly and the image project by the third bulb is warped at the corners. Right at the center of the...


You need to replace Both of the Convergence ICs they are Big Black ICs and will have Part Number on them STK392-560 and this will Fix Problem.
Mats Electronics has ICs 1-800-628-1118.
If you should need any more help with this Matter ,Just let me Know
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Tv screen will freeze up after running and then go out while the lights blink on and off. I have replaced the bulb, but that did not take care of the problem


I have the same problem. It flashes ten times when booting up. Once it starts displaying a video image, it freezes after 10 seconds and then cycles off. It cycles on a minute or more later.

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Dead screen


The guns have failed on you, this is going to need some repair work. Try getting a estimate on how much it would cost to have that fixed. Normally its arounf $80 per hour plus parts.

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Mar 25, 2009 | Sony KP-61HS10 61" Rear Projection...

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Toshiba 57H81 Flashing Red Power Light, Blown Fused F850+F852


Solved by resoldering some solder joints!!!!!!!
********
Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001

Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852

Symptoms January, 2009:

  • Upon turning on set I got flashing red power light and nothing else.
  • Removing plug for one minute and plugging in results in:
    • Audible click, steady red power light for 2 seconds then slow flashing red light
    • Pushing power button results in steady red for about 2 seconds then slow flashing red light, no other set activity
  • Removing power cord for several hours and plugging back in made no change
    • Audible click, steady red for about 2 seconds then slow flashing red light
  • Possible related note: Over past several months occasionally the entire screen would flicker momentarily and at other times be problem free for weeks.
  • Fuses F850 and F852 found blown

Repairs Made:
  • PD0074 DEF/CON Power Board
    • There are two main power supply capacitors in this set. They are C-809 and C-810. One their negative lead on the printed circuit board re-soldered leads and nearby contacts. I’m told that because the factory left out a printed circuit board eyelet, the connection will come loose over time. When I called Toshiba customer service they said there was a known solder joint problem causing blinking red light.
    • Replaced blown fuses F850 and F852.
      • I actually installed a fuse panel on the inside of the cabinet and routed the fuse connections here instead of ordering the special fuses and replacing them on the circuit board.
      • Had to use a 5 Amp SLO-BLOW for F850. Fast blow does not survive power up. Get the red blinking light.
      • Used a fast blow 2 Amp for F852.
  • PD0073 SIGNAL Board
    • Re-soldered Q751 + Q752 STK392-110 Convergence Amps
    • Re-soldered adjacent pads that looks suspicious

Total Cost to Repair about $10
  • Twelve hours of my time over three days to research issue, disassemble set, make repairs, add fuse panel.
  • Already owned Service Manual and Circuit diagrams from a different 2004 repair.
  • Less than ten dollars at Radio Shack for fuses and fuse panel. Already had wires, etc.
  • Some solder. Already owned de-soldering tools, etc.
  • Visited both local authorized Toshiba factory service repair facilities. One said repair would have to include replacing Q751 + Q752 STK392-110 Convergence Amps with ST392-180, and realigning set for a total of $500+ and it would be more if they had to order a power board. NO THANK YOU! Other shop said $65 for site visit and $30 to make an estimate that could be applied to repair.

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1 Answer

3D like view on my screen


you ned to replace both convergence ICs they are STK392-570 you can get replacement ICs at the following link with free installation instructions.
http://servicemanuals.vstore.ca/

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1 Answer

Hitachi shows double image and then no picture or sound.


KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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No Power in Mitsubishi VS-55705


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