Question about Panasonic TCP42C1 Plasma TV

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Steady Red light

No picture the unit has steady red light fro 30 seconds upon turning On then then off.

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  • 35 Answers

Try to hard reset it. Unplug it from the power strip for about 4-6 hours and try to turn it back on. If you get BSOD-Black screen of death again and LED blinking then you need to replace the blown caps on the power supply board (PSB) Radio shack or harbor freight tools to get a solder kit w/ flux and about a dozen new thru- hold caps 2v above the current ones on the board. There is also refurbed PSB's on shopjimmy partsstore and ebay. To gain access to the PSB you need to remove the back panel. The PSB with be Printed on the Board Power Supply and the REV number (part number) will also be printed on the board. Disconnect the wire harness and ribbon cables if any and a few screws to pull the board out for repair or replacement. The board only goes in one way. Number the wire harness or take pics to you now which wires go where when you go to replace the board back in the set. Make sure you do this with the TV unplugged...

Posted on May 13, 2014

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Posted on Jan 02, 2017

tvguy171
  • 106 Answers

SOURCE: Blinking Red Standby Light - No picture

The six blinks indicates that an internal fan is either bad ot blocked by dust or debris, You should be able to look in the back of the unit and see some cooling fans. Chances are one on them is not turning and will need to be replaced

Posted on Nov 26, 2008

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STEADY LIGHT


All flat panel tvs from china have cheap capacitors. Replace and check in ps area.

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Steady red light when off.. when I turn it on , the green light will come on and then the picture will come on with sound for only a few seconds and then it goes off again with a stedy red light.


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Your bulb came to its peak burning life and now its dead which sense by the processor and made the unit automatically shuts off. Once replace with new one your unit will back to normal again.

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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.
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  • 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

Blinking Red Standby Light - No picture


The six blinks indicates that an internal fan is either bad ot blocked by dust or debris, You should be able to look in the back of the unit and see some cooling fans. Chances are one on them is not turning and will need to be replaced

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Plantronics voyager 510 headset


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