Question about Toshiba TP50H50 50" Rear Projection Television

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Toshiba TP48E50 red power light flashing

Picture was displaying convergence problem, found web info on that, changed IC's with exact replacements. Verified all fuses, resistors, solder connections etc. Now, nothing! It goes into protection mode and flashing red light. You do here two clicks and some speaker noise upong plugging in. Any advice?

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Hello there well form my prior experiences and ive had many...i would suggest checking high voltage maybe the horizointol output or try checking the flyback for shorts...it is in the power suppy.......hope this helps..someitmes these sets have codes and the blinking light in the front panel may indicate the problem..see how many time it blinks in intervals and then see if you can check out the codes on the net....

Posted on Feb 04, 2009

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Posted on Jan 02, 2017

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No picture or sound with a red flashing power light. Have replaced the convergence IC's but no change (do not have the chirpint sound). Removed main power board & green LED does not light up


On that model the conv IC is usually not the solution. I believe its the blown capacitor problem with is an easy fix. Check the site www.TvRepairKits.com for a repair kit.

Apr 11, 2012 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Toshiba 43VJ22P convergence trouble! I have a Toshiba 43VJ22P, the red convergence was out in the x plane, and could not be adjusted, however it could be adjusted in the y plane. So i've changed the...


Hi


Thanks for using FixYa. Then it means the problem is with the convergence board and it’ll require to be replaced to resolve the issue.

Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

Feb 26, 2010 | Televison & Video

1 Answer

The blue convergence will not move left and right


The convergence Ic`s need to be replaced, in the future give your model number it helps us to give you more info, video-tek

Feb 07, 2009 | Toshiba Televison & Video

1 Answer

When the power button the red button flashes but nothing else hap


the red light flashing means the set is in auto shut down, could be a power supply problem or a convergence IC problem. tech should first check all diodes and caps in power supply then replace convergence IC's

Jan 11, 2009 | Panasonic PT-53WX42 53" Rear Projection...

3 Answers

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


Solved by resoldering some solder joints!!!!!!!
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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.

Jan 04, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 50H81 Has Power but No picture or Audio


ok i'm goin to need more info about your problem. you stated fuses and didn't say the location numbers of the fuses. Also, have you rechecked your fuses to see if they are all still good? 3 fuses sounds like more then one problem. once you tell us your loc#'s of your fuses, we can look into your problems.

Apr 07, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

Tv won't come on


Mine is Toshiba 55 TZ, have it since 98', shutdown and red light blinking problem, search the ned and found out, generally a Convergence IC (stk392-110) problem. bought 2 for $15 at suburban-elect.com (ebay). replaced following direction from http://www.casiasfamily.com/repairlog/tp50h15.html

Open back cover, 9 screws and wirings (pls mark), removed(soldered) a electronic board infront of convergence ic. removed IC (stk392-110) (screwed and soldered).

Replaced everything and voila...! it is now working again..
no more shutsdown and red blinking light. Saves mo $400 for a repariman. of course just be careful with static and stuff.

Feb 29, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

5 year old tv


Mine is Toshiba 55 TZ, have it since 98', shutdown and red light blinking problem, search the net and found out, generally a Convergence IC (stk392-110) problem. bought 2 for $15 at suburban-elect.com (ebay). replaced following direction from http://www.casiasfamily.com/repairlog/tp50h15.html

Open back cover, 9 screws and wirings (pls mark), removed(soldered) a electronic board infront of convergence ic. removed IC (stk392-110) (screwed and soldered).

Replaced everything and voila...! it is now working again..
no more shutsdown and red blinking light. Saves mo $400 for a repariman. of course just be careful with static and stuff.

I don't know how to solder, so I ask friend to do it for me. But I did the rest. Just to give you an idea that it can be done even if you don't know much about electronics. This in no way a recommendation but just stating my experience. Follow at own risk.

Feb 16, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

Toshiba 42H81 problem set won't turn on


This repair is for technical skilled only.....
1) Pull chassis
2)Replace open fuse(s)
3)Replace Convergence IC"s
4)Solder specific bad connects
5)Reassemble,test

Please read my previous posts concerning convergence repairs.
Or provide Make,model,age and symptom.............T.

Jan 03, 2008 | Toshiba 42H81 42" 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...

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