Question about Pioneer SD-P50A5-K 50" Rear Projection Television

1 Answer

Red led on power supply board comes on after I turn power on.

I had resoldered all my connections on the board (use to intermitte real bad) now it does not do that but I get the red led on after about 3 seconds. I need to know if I can disconnect other boards to find out if they are loading this down. I can not find a print to this tv anywhere and believe me I have called pioneer, sams,and checked every manual company on the net. the tv did turn on once after resoldering and would not shutdown. after I turned it off it would not turn on again. I checked all large caps and they check good. It could be the conversion board but with out a print Im stuck. any one know how to override the protection circiut? If I get too much rf I wont blame anyone but myself. thanks

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I have the service manual for the set.

email me and we'll work something out.

las dot trampas at gmail dot com

Posted on Oct 07, 2008

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Plasma screen does not come on and power supply board is bad


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Feb 06, 2013 | Panasonic Viera TH-42PZ85U 42 in. Plasma...

1 Answer

I have a pioneer 710HD elite that is stuck in standby mode. The red power light is on, but it will not come out of standby to turn on with the green light on. Thoughts?


Your Pioneer 710HD has the classic cold solder joint problem endemic
to all of this series of Elite CRT RPTV. The power supply - PS -
board needs to be resoldered virtually completely. It's a time
consuming, tedious job that if you get wrong, who knows what could
happen when you turn it on again? So don't even think about
resoldering it if you are an amateur at the soldering process.
I do this job every day then run it out in my test 610HD - same
series - and then equip your board with a lifetime warranty on the
resoldering work I have done. Please contact me directly, google Mr
Bob and calibrations and Image Perfection. Unless you do resoldering
every day as a professional assembler or are an experienced repair
tech, I cannot in good conscience advise you to do this yourself.
Far too much is riding on it.
However, if you are highly experienced at soldering, resolder
everything but the heat sinks, the test points, and whatever has
already been resoldered and is still glossy and gleaming, like fresh
resoldering is. The solder used in the original assembly of that
board was far too thin, which results in these cold solder joints.
And don't do it part way! Many joints that are not bad now will be
soon, trust me, and if you have only resoldered just the ones that
are bad now - the early ones to go out - and continue to use it, you
make your board that much more susceptible to the far more dangerous
ones that happen later on, which can damage boards downline from the
power supply board.
I am the only repair person I know of offering a lifetime warranty.
Even Pioneer does not do that. In fact I have permanently corrected
many rebuilt Pioneer boards when they've gone out later. Pix are
available at www.avsforum.com
In your case chances are you have not heeded the warning signs of
cold solder joints: intermittent ops, blue flashes, fluctuations in
the brightness of your pic and other instabilities.
In the case where one of these units turns on then turns off again -
LED in front goes green, then immediately back to red before a
picture has a chance to appear - it's "going into protection".
Chances are something downline has now been damaged because of the
instability of the PS board, which is responsible for powering up the
entire unit.
What I would recommend if it's "gone too far" and the unit will not
stay on anymore, is a troubleshooting session with me on the phone,
which is something I require before allowing a PS board to be sent to
me for resoldering if the set's not staying on. Luckily, these sets
were designed with on board diagnostics that can be read by
technicians from far away.
If it goes green then stays green but no pic appears - even graphics
like the Menu - then one of the cold solder joints that powers up the
section that powers up your picture has opened up and is now staying
open. This has always been remedied 100% by the resoldering process.
If it powers up correctly upon turnon from dead cold, DON'T PUSH IT!
If it still has intemittencies, it's in a very precarious, dangerous
condition. Many sets have been run past their warning signs, and by
the time I get notified and can lend a hand, they are considered
totalled and are abandoned. Don't let that happen to you. RUN IT
FOR NO MORE THAN 40 SECONDS, and power it down again and unplug it.
DO NOT ALLOW IT UP TO NORMAL OPERATING TEMP AGAIN - EVEN ONCE - UNTIL
FIXED PROPERLY.
If it turns on from dead cold and works properly even tho
intermittencies have happened in the past, this is the best case
scenario. It means it can be resoldered properly and you'll be home
free. Or sent to me for resoldering if you are not a highly
experienced repair tech or assembler, in which case you'll get my
lifetime warranty on the resoldering work.

Mr Bob510-278-4247bob@imageperfection.com

Dec 18, 2011 | Pioneer PRO-710HD 64" Rear Projection...

2 Answers

After turning of the TV for a few minutes, it won't turn ON. The power LED turns green for a second and then becomes red and flashes, Philips Model 32PF7321D/37


grodmx74, You or electronics technician will need to find the "thermally-intermittant-hair-line-fracture" of a component soldered to the switch-mode-power-supply printed circuit board with aid of large magnifing glass or use a 10x or 20x inspection microscope, and then resolder the connection. 12fixlouie

Apr 02, 2010 | Philips 32PF7321D 32 in. LCD Television

1 Answer

IT DOES NOT TURN ON, NOT EVEN THE RED LED LIGHT


On the power supply board is a thyresistor will be up on front of board resolder this should fix problem. Ive fix alot of them that have same problem Part acts as a heat conductor switch they were not solder in Good so after awhile solder is bad.

Nov 19, 2009 | Akai PT5250A Television

2 Answers

Sony Bravia KDL-52XBR9 wont turn back on red led flashes unless I uplug and plug back in. Did firmware upgrade to newest aa0143pn, still happening.


There is a error in TV.Count how many times blinking the red light.

  • Unit is dead, No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).
  • Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.
  • One blink - not used for the self-diagnosis
  • Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.
  • Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.
  • Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
  • Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.
  • Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
  • Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
  • Eight GA_googleFillSlot("TL-IMU-Article"); blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board. GA_googleCreateDomIframe('google_ads_div_TL-IMU-Article' ,'TL-IMU-Article');

  • Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).
  • Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" boards

Nov 16, 2009 | Sony BRAVIA KDL-52XBR6 LCD TV

1 Answer

No Picture & No sound. Red LED, Green LED, Red LED.


If the power supply outputs are good! Then I would say the back light inverter is bad! If the screen stays black and does not come on.

Jan 14, 2009 | Akai LCT2660 26 in. HD-Ready LCD...

1 Answer

TV turns off


Sounds like a bad solder connection on power supply board. Remove the back, turn on the set,using the handle of a screwdriver tap the power supply board and see if it shuts down. The power board is the one attached to the power cord. If it does shut down, UNPLUG the set, remove the power supply, inspect the bottom of the board and look at all solder connections with a magnifing glass. Look for any dark rings around solder connections, and resolder with fluxed 60/40 solder. tonyfalcione@msn.com

May 16, 2008 | Philips 42PF9631D 42 in. Plasma Television

2 Answers

Pro-710hd


This has been successfully answered, but here's some more information:
Your Pioneer 710HD has the classic cold solder joint problem endemic to all of this series of Elite CRT RPTV. The power supply - PS - board needs to be resoldered virtually completely. It's a time consuming, tedious job that if you get wrong, who knows what could happen when you turn it on again? So don't even think about resoldering it if you are an amateur at the soldering process.
I do this job every day then run it out in my test 610HD - same series - and then equip your board with a lifetime warranty on the resoldering work I have done. Please contact me directly, google Mr Bob and calibrations and Image Perfection.
Unless you do resoldering every day as a professional assembler or are an experienced repair tech, I cannot in good conscience advise you to do this yourself. Far too much is riding on it.
However, if you are highly experienced at soldering, resolder everything but the heat sinks, the test points, and whatever has already been resoldered and is still glossy and gleaming, like fresh resoldering is. The solder used in the original assembly of that board was far too thin, which results in these cold solder joints.
And don't do it part way! Many joints that are not bad now will be soon, trust me, and if you have only resoldered just the ones that are bad now - the early ones to go out - and continue to use it, you make your board that much more susceptible to the far more dangerous ones that happen later on, which can damage boards downline from the power supply board.
I am the only repair person I know of offering a lifetime warranty. Even Pioneer does not do that. In fact I have permanently corrected many rebuilt Pioneer boards when they've gone out later. Pix are available at www.avsforum.com.
In your case chances are you have not heeded the warning signs of cold solder joints: intermittent ops, blue flashes, fluctuations in the brightness of your pic and other instabilities.
In the case where one of these units turns on then turns off again - LED in front goes green, then immediately back to red before a picture has a chance to appear - it's "going into protection". Chances are something downline has now been damaged because of the instability of the PS board, which is responsible for powering up the entire unit.
What I would recommend if it's "gone too far" and the unit will not stay on anymore, is a troubleshooting session with me on the phone, which is something I require before allowing a PS board to be sent to me for resoldering if the set's not staying on. Luckily, these sets were designed with on board diagnostics that can be read by technicians from far away.
If it goes green then stays green but no pic appears - even graphics like the Menu - then one of the cold solder joints that powers up the section that powers up your picture has opened up and is now staying open. This has always been remedied 100% by the resoldering process.
If it powers up correctly upon turnon from dead cold, DON'T PUSH IT! If it still has intemittencies, it's in a very precarious, dangerous condition. Many sets have been run past their warning signs, and by the time I get notified and can lend a hand, they are considered totalled and are abandoned. Don't let that happen to you. RUN IT FOR NO MORE THAN 40 SECONDS, and power it down again and unplug it.
DO NOT ALLOW IT UP TO NORMAL OPERATING TEMP AGAIN - EVEN ONCE - UNTIL FIXED PROPERLY.
If it turns on from dead cold and works properly even tho intermittencies have happened in the past, this is the best case scenario. It means it can be resoldered properly and you'll be home free. Or sent to me for resoldering if you are not a highly experienced repair tech or assembler, in which case you'll get my lifetime warranty on the resoldering work..
Mr Bob510-278-4247bob@imageperfection.com

Apr 28, 2008 | Pioneer PRO-710HD 64" Rear Projection...

1 Answer

4a fuse blown


1)pull chassis.remove power PCB==the one with large heatsink w/convergence IC's on it 2)Observe four regulators also on same heatsink Remove solder from all reg. pins-clean PCB 3)Resolder 4)solder any/all bad connects 5)replace 4 amp fuse 6)reassemble & test

Oct 05, 2007 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Power Problem


Most often this problem is caused by convergence ic's. STK392-110. Sometimes cause is vert. i.c. Also, many times it is from bad solder connections on circuit board. In any case, short of unplugging unit to reset, there's not much you can do without help from repairman.By(1)removing rear cover,(2) unscrewing 2 screws holding chassis in and(3) undo all clips and wire ties holding wiring in place. Small board on (R) side is conv. Slide entire chassis towards you. Remove 3 screws from small conv. board.Remove and mark 5 plugs and 4 black jumper plugs to free board. Look at bottom of board for rings around solder joints at pins of main amps.(STK392-110). Resolder or replace amps and reinstall board. Reconnect 4 jumpers and 5 plugs in same order. Power up unit and hit magic focus. This is most common repair.

Mar 06, 2007 | Hitachi FDX Series 43FDX10B 43" Rear...

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