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 Televison & Video

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 Televison & Video

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

The reset light is blinking continuously. Unplug the TV for 10 minutes, didn't fix problem. Power button at front of TV cannot turn TV on/off - it's frozen. At this point, the remote control doesn't...


My first move would be to inspect the power supply board for bad capacitors. look for a bulged or skinned capacitor. Even if these capacitors look good, they may be failing. You will need an ESR meter to check for current. You will need an ESR meter for this. Then you will need to check the Mfs with another type of capacitor checker. These two types of capacitor checkers will be a necessity to find these failing caps. If the caps and voltages check out fine in the power supply, you will of course need to inspect and check the capacitors in the signal board. Definitely, there are bad capacitors in one or both boards. I have not repaired this particular model, but the symptoms you describe, tell where to look. Thanks for asking and show all hand of support!

May 02, 2011 | Mitsubishi Televison & Video

1 Answer

Light turns on so the power works but the screen stays off


Check capacitors on the inverter boards.Replace them if bulged on top. Shine Light on screen .If image iss there then this verifys that video is present and the problem is backlight. If caps are ok look for voltage about 15v to inverters from power supply and also an inv on voltage if present replace inverter boards. If no voltages from power board ,replace power board.

Mar 23, 2011 | Televison & Video

1 Answer

My 3DC-1000 will not power on but the power cord is plugged in and its brand new


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.


Take care

Dec 24, 2010 | Mitsubishi Televison & Video

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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