Question about Projection Televisions

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PLASMA TV MOD PDP32H1ENV UNIT POWERS UP NORMAL PICTURE APPEARS FOR ABOUT 2 SECS THEN GOES INTO PROTECTION (SHUTS DOWN)GREEN STBY LIGHT FLASHES. NOTE! COOLING FANS NOT OPPERATING. CAN THIS BE THE PROBLEM? I HAVEN'T GOT ANY SERVICE INFO YET DAVE FARR, BIFARR AUDIO VISUAL bifarr@tiscali.co.uk

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  • motorman47 May 14, 2008

    THIS IS NOT ON LONG ENOUGH TO GET EVEN SLIGHTLY HOT, ABOUT 2 SECONDS

  • motorman47 May 14, 2008

    Its been off all day, the psu is working OK for 2 seconds it, then just goes into protection, a normal picture appears then it powers down It is not overheating as it is only on for 2 seconds.

  • motorman47 May 14, 2008

    I do repair these things as a profession. this particicular model is new to me. I have repaired many makes of plasma/lcd screens inc Philips LG Sony Toshiba etc.and don't have too many problems

    My enquiry is; has anybody had a similar fault on this particular model as I haven't any service manual on this model, and is it that the cooling fans are not opperating causing it to go into protection? As their non opperation may be activating the protection cicuitry. This is the case with some computors etc.

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  • 351 Answers

Dear Dave,
yes this is also a fact because the PCB become heated very son in these models so preventioally they shut off if the cooling fan is not work that time. here i suggest you please contact any authorised service centre to rectifird this proble


regards



Posted on May 14, 2008

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  • 3,422 Answers

HI,

Did you try a hard reset? unplug all the cords for 4 hours and then plug it back.This will restore the factory default settings.If this doesn't help then you will have to get it repaired since it is switching to protection mode to avoid any further damage to it.

Goodluck..

Posted on May 14, 2008

  • 1 more comment 
  • Priya darshan May 14, 2008

    I would strongly recommend you to get it repaired.But if you need more assistance you can rate us thanks for trying and go with other expert's opinion.I

  • Priya darshan May 14, 2008

    ok,Please give me few min. i'll let you know if there is a service manual available for this model..

  • Priya darshan May 14, 2008

    ok,I have serched for the service manual but i don't think it is available for download.Anyways i suggest you to go for the other expert's opinion on this.All you have to do is rate our solutions as "Thanks for trying" and your problem will be posted again..

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If you have an issue where your picture turns off and the green power light starts flashing, you are most likely looking at a weak or old lamp. Do not be confused with a pix loss and a RED light flashing, as this can be caused by many things. The normal sequence of events for this fix is this:
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Continued from no picture no sound just clicking


The TV is on protect mode. The clicking sound is the protection switch that keep turning the TV off to prevent further damage, this happens when a fault had been detected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

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The flashing light indicates a diagnostic state called protection.
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If you are in situation 2 , then there is an internal fault.

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Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


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I UNPLUGGE MY TV FOR 2 DAYS AND PLUGGE IT ON BACK


If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

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On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

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Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

You can find parts here,

Appliance parts, electronics parts & more from PartStore.com

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If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

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1 Answer

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If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

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Replacing the amps and one or more resistors in the yoke return will restore the set to normal operation..
Use only Sanyo original Ics..
Bill

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