Question about Mitsubishi WD-52525 52" Rear Projection HDTV

1 Answer

How do I access the power supply? I'm Stuck!

Trying to fix the capacitors on the power supply but don't know what to do now that I've got the set open. Can you help?

Posted by Slow Motion on

  • Anonymous Nov 03, 2007

    power to tv,tv does not respond to remote,have ck.power to tv,2 fuses,remote

  • erinbooker Dec 19, 2007

    Repair man came and said we need a new power supply, but he can't get one in until mid January. Does anyone know where I can get one?

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1 Answer

Anonymous

Remove electric chassis. Power PCB is under back end cover of chassis unit.

Posted on Oct 04, 2007

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1 Answer

Power supply or mainboard?


what is the model # of your TV

Jun 02, 2013 | Televison & Video

Tip

How not to fix a power supply


If for some reason your computer's power supply fails, here are a few tips on what NOT to do!
  1. Don't Open it
  2. If you open it, DON'T TOUCH THE TALL ROUND THINGS
  3. If you want to know what those "Tall round things" are, they are capacitors.
  4. Power Supply capacitors hold their charge, for a very LONG time...
  5. Don't touch 'em, you'll die.
How to fix a computer power supply
  1. Take it out, don't open it, get a new one.

on Feb 15, 2015 | Microsoft Computers & Internet

1 Answer

Power board for 37pf5521d


hello!
You don't need to replace power supply in most cases. If you can to the board itself, it buried deep under metal shield, up side down, remove it from the set by unscrewing 6 machine screws, unplugging few plastic connectors. Be careful, connectors are fragile, gently move those in every direction, while pulling out male part of connectors. You will find at least 1 "bloated" electrolytic capacitor, remove and replace those. It's good have "in circuit" capacitor checker to determine quality of "hot side" of power supply capacitors. If you won't find and replace those, small: 1mf 10mf or 22mf, your set will start up, might even work fine for a while, then will quit for good! I've seen that happen! If you don't have capacitor gizmo, then replace all small electrolytic capacitors on "hot" side of power supply. "hot" is that side, what connects to main power in plug area, contents one large capacitor, I.C. chip diver, power mosfet, etc. worst case scenario: if you can't replace those parts yourself, remove the board and take to local TV repair shop. It won't cost you that much to do so, compare to complete TV repair.
Good luck,
Alex.

Feb 19, 2012 | Philips 37PF5521D 37 in. HD-Ready LCD...

2 Answers

LG 42PJ350 tv, will not power up, just clicks


Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Good luck.

Jan 12, 2012 | LG 42PJ350 42 in. TV

1 Answer

I have a Aquos LC-37GP1U new out of box. Have the blinking light issue. Power on for 2 seconds and then shut off. Replaced the power supply board as it was cracked. Still didn't help. Should I be...


Hi,


You have to check if the replacement power supply board is the same part no. as the original one, it is printed on the board itself.


I don't think that the fault came from defective electrolytic capacitor because like what you have said, the unit is new out of the box and you've already replaced the power supply board which is most of faulty electrolytic capacitor came from that board.


You've mentioned also that the original power supply board has cracked, I've suspected that the main board also has been damaged because the blinking led light error codes will be encountered if the power supply board or main board gone to malfunction. If you've confirm that the power supply board is the same part no. like the original one, then I would advice you to replaced the main board.


Please let me know if you need further assistance.


Have a great day!

Mjsazon

Nov 27, 2011 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV

1 Answer

My TV stopped working two days ago. The red stanby light is on and when I try to turn the TV on, either with the remote or on the side of the unit, the "green light" comes on for a few seconds...


Hello,
The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.
The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.
All these can be checked on the power supply board.
But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.
The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.
What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).
You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.
Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.
If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.
I hope this helps.
Regards.

Jun 17, 2011 | Akai LCT3201AD 32 in. LCD Television

4 Answers

AC adaptor for 32 inch Protron TV


It seems a lot of people are having problems with the Protron power supply. I’ve been able to repair all the ones I’ve seen so I’m confident I can fix them. I don’t sell the replacement power supply but I’ve heard about the ones on EBay. They seem to be a mishmash of two power supplies (12vdc and 24vdc) wired together with the proper connector. This should work but it just doesn’t sound very clean looking to me and they end up costing $150.

I’ve been charging between $50 and $100 to repair these power supplies. My recommendation would be to send me the power supply I’ll check it out and unless it’s unusually damaged it will cost $50 plus shipping to repair. If I can’t repair it I’ll return ship it and only charge for shipping.

I will guarantee the repair for 1 month. I don’t know what’s causing the power supplies to fail so I can’t guarantee it any longer than that. My feeling about the reason the Protron power supply stops working is two part; could be overheating due to lack of proper ventilation to the power supply; or the TVs power requirement is overdriving the power supply.

Feel free to contact me if you have any questions.
I repair these at my work, so here’s the shipping address:

Dave Simpson
23372 South Pointe Dr.
Ste. B
Laguna Hills, CA 92653

Also, I’m set up for PayPal.
[email protected]

Sep 10, 2008 | Protron PLTV-32 Television

1 Answer

Does the power supply you purchased from LCD Payless still working?


I tried to purchase one for the $142.00 and it was not in stock. I think contaced the person someone recommended on this website. This was his answer:

It seems a lot of people are having problems with the Protron power supply. I’ve been able to repair all the ones I’ve seen so I’m confident I can fix them. I don’t sell the replacement power supply but I’ve heard about the ones on EBay. They seem to be a mishmash of two power supplies (12vdc and 24vdc) wired together with the proper connector. This should work but it just doesn’t sound very clean looking to me and they end up costing $150.

I’ve been charging between $50 and $100 to repair these power supplies. My recommendation would be to send me the power supply I’ll check it out and unless it’s unusually damaged it will cost $50 plus shipping to repair. If I can’t repair it I’ll return ship it and only charge for shipping.

I will guarantee the repair for 1 month. I don’t know what’s causing the power supplies to fail so I can’t guarantee it any longer than that. My feeling about the reason the Protron power supply stops working is two part; could be overheating due to lack of proper ventilation to the power supply; or the TVs power requirement is overdriving the power supply.

Feel free to contact me if you have any questions.
I repair these at my work, so here’s the shipping address:

Dave Simpson
23372 South Pointe Dr.
Ste. B
Laguna Hills, CA 92653

Also, I’m set up for PayPal.
[email protected]

Sep 05, 2008 | Protron PLTV-32 Television

2 Answers

Dead Power Supply


Call 888-257-8899 $69.95 plus shipping

Feb 19, 2007 | Protron PLTV-32 Television

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