Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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Checker board screen in mitsubishi

Hey on one of your answers I see you listed some capacitors-

"The bulging cap replace with 680ufd (same voltage), if they are 1,000ufd's. To order try 1-800-458-6053 B&D Enterprises.
Good Luck, big IRISH."

I need to probably replace the 3300uF caps as well, other than digikey, where can I order these parts from? I see you say I should go to 680 from 1000, why is that? it wont hurt anything will it? should I get a different capacity rating then the 3300s as well? and if so then what capacitance?

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Good Day, xx007xx;
680 from 1 K is from Mit's, common parts, get from ant local parts or TV service center. Good Luck, big IRISH.

Posted on Sep 04, 2008

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1 Answer

I have a Mitsubishi 1080 Series HDTV big screen not turn the power button TV comes on then TV shuts back off


Hi John

Check the switch mode power supply inside the TV.
Caution.... lethal voltages

The power button is digital these days. That is... it does not have the AC power directly connected to it. Like a normal appliance.
It's a Computer.
Nowadays, the switchmode power supply module converts the incoming AC power to the lower DC voltages required by the other circuit boards.
It uses lots of Electrolytic Capacitors to clean up noise in the DC power. Being Electrolytic they are prone to leaking & bulging so they don't do their job. They won't hold a charge. By pulling the plug and restarting, you have found a way to overcome the problem. But only temporarily. When the Cap goes fully bad, you won't be able to start the TV any more.
*************************************

There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it off and on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for some time and then try again.
If you aren't tech savvy, don't worry, read the rest of this solution and watch the videos.
If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).
Most of the caps that go are 5v to 25V 1000uF or 3300uF.
Replacement Caps can be slightly higher values (not lower) depending on available space.
Also... a higher temperature rating is beneficial.

See Cap Replacement Here
NOTE: Even when Disconnected from the Mains.... Capacitors on the SwitchMode Power Supply board on the 110vac / 240vac Mains Side....can supply a shock hazard to unwary people.
The DC Side is far safer at 5 to 20v
But... There is no Really High 15 to 25Kv inside Digital TV's any more. So... You don't need to leave TV disconnected for a day to discharge these voltages as stated in the attached video.

Samsung TV Power on Problem Capacitor Replacement

How to Repair Your Plasma TV With Blinking LED

How to Replace an Electrolytic Capacitor


Dec 27, 2015 | Mitsubishi Projection Televisions

1 Answer

Mitsubishi tv pop, now no picture and it has a grey spot on the screen.


Hi
If you are a tech type
Disconnect Power
Your Modern Digital TV is just a Computer with CPU & Video Memory.
No 25KV voltages to worry about.
There is a shock hazard on AC side of Switchmode.
Electro Caps on AC side can hold 110 / 240v

Check Switchmode internal power supply on DC Side for bad capacitors.

Bulging or leaky Electrolytic Caps cause many failures in modern digital TV's
How to Replace an Electrolytic Capacitor

Switched mode power supply

Dec 27, 2015 | Mitsubishi Projection Televisions

1 Answer

Good day. please i have a Mitsubishi WD-60C9. but whenever I turned it on. it will on to blue screen and turns off again. please what will be the cause.


Hi Olamiposi

Modern Digital TV's are now Computers with a CPU & Memory etc. Prone to various component problems.
But.... the biggest & most likely problem is that the DC voltages are not stable

Caused by Leaky or Bulging Electrolytic Capacitors

Do you have access to a Soldering Iron?
Do you Have Access to an Electronic Components shop?

If you are not a Tech Type....
Take it to a service tech & ask to check Electrolytic Caps.
Most Tec's these days will Just Do A Board Swap. Costing $$$

If you are a tech type and feel like exploring & fixing the problem.
Disconnect The Power
No Internal 25KV voltages to worry about.
There is a shock hazard on AC side of Switchmode Board.
Electro Caps on AC side can hold 110 / 240v

Check Switchmode internal power supply on DC Side for bad Electrolytic Type Capacitors.
The insulated Tin Cans on the PCB

Bulging or leaky Electrolytic Caps cause many failures in modern digital TV's
Good Luck



Switched mode power supply

How to Replace an Electrolytic Capacitor

Dec 26, 2015 | Mitsubishi WD-60C9 60" DLP HDTV

1 Answer

My Mitsubishi WD-62725 TV keep blinking but won't turn on?


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.

Jul 17, 2011 | Mitsubishi WD-62525 62" Rear Projection...

1 Answer

When we turn TV on it runs thur cycle like it is coming on showas the Mitsubishi screen and then shuts down


Hi rford312.

I had a similar problem with my 42 in Philips LCD HDTV. I may have the solution to your problem.


Here was MY problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems.


Here are some options for you to consider.


1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?)

Remember, TVs CONTAIN HIGH VOLTAGE AND CAN KILL YOU! Do this at your own risk.

2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. They can be found online. I would definitely shop around though.


3. Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.


This may be your problem. If you determine that it might be.

I have a Tip/How TO tutorial on this site that may also help. It will, at the very least, give you a general idea of the process. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. Here is the Link: Fixing the Philips Turns/shuts off on its own problem.


Hope this helps.

If you have any questions for me, please comment on this page. I will be happy to assist you to the best of my ability. Thanks for using Fixya.


Kaufman605

Dec 22, 2010 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

I have a WT- 46809 HD1080 when i turn it on i shuts right back off. So it never turns on it was working great than just shut off. whats wrong and how expensive ti fix???


Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to.

I do not think it needs replacement, rather some defective capacitors are 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.

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.

Dec 03, 2010 | Mitsubishi Projection Televisions

5 Answers

MITSUBISHI 65 INCH HDTV, GREEN LIGHT BLINKING, WILL NOT POWER UP


There are four (4) caps on the 'DM' board that need to replaced. Parts: 680ufd 16 volts, orig are rated at 1,000 ufd.

Nov 01, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Checker board problem


Good Day, xx07xx;
Not sure what your exact problem is but; Check D8F00 and D8F01 part # 264P828010, also check C8F26 and C8F29 part # 141P148000 (1 uFD, 25 V) on the FMT PCB (part # 930B924002). The bulging cap replace with 680ufd (same voltage), if they are 1,000ufd's. To order try 1-800-458-6053 B&D Enterprises.
Good Luck, big IRISH.

Sep 03, 2008 | Mitsubishi WD-52525 52" Rear Projection...

4 Answers

Whats with my tv?


Good Day;

Replace all caps that are swollen, but resolve your checker pattern:

1. Tile or block pattern replace D8F00 and D8F01 part # 264P828010, also replace C8F26 and C8F29 part # 141P148000 (1 uFD, 25 V) on the FMT PCB (part # 930B924002).

The diodes have a stripe (line) that is the cathode, at one end of the device, the board will reflect that line. Good Luck, big IRISH. PS ; De solder as best as you can, glue is under part, heat one end, while prying up, heat other end. It will come off with moderate to mid high heat.

Sep 01, 2008 | Mitsubishi WD-52525 52" Rear Projection...

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