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PM 909 monitor with a leaky C61 capacitor--however, the cap seems to be too big for the rating listed on the the side--it looks like it says 4.7u, 50V, although the dot looks suspiciously like a subscript 1--anyone know the true rating of this cap?

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This is a high frequency non polar electrolytic. I just replace the same cap and the new replacement was almost the same size

Posted on Aug 13, 2008

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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

My Sony KF-50WE610 takes 5 to 15 minutes of clicking the on button to start. The bulb was replaced but did not change the problem so it is not the bulb. It seem to be some sort of starter issue. Any...


Hi Don,
This problem is commonly caused by leaky electrolytic capacitor on the power supply section.
This cap affect the regulation of the supply and sometimes needs a little warm up to back from functioning. The symptom will get worst if not isolated the cap. Some leaky cap shows bulged at the top but not all, it is better to check with an ohmmeter. Look also if there is a dry joints in that area.
Hope it may help you.
Have a nice day!

Feb 09, 2011 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

I have a sumsung 51" rear projection tv that fails


Hi,
The main problem is the Leaky electrolytic capacitor on the power supply section.
Sometimes it will be seen with a bulged at the top. jdvillanueva_0.jpg But not all leaky capacitor bulged. Once isolated your unit will back to normal again.
I've advice you to look for a qualified technician if you can't find the leaky cap on the voltage regulator section.
Hope it may help you.
Have a nice day.
JDVillanueva

Feb 06, 2011 | Samsung Televison & Video

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When power button is pushed on it clicks "green" for 2-3 seconds and then powers off.


Replace Both of your convergence ICs STK392-570, they are big black ICs.Also resolder all poor connections,look for leaky capacitors.

Aug 07, 2009 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

The power button blinks 3x''s but the TV does not come on at all


This is most likely caused by leaky capacitors in the television. The power supply that feeds the startup voltage to the CCFL tubes usually contain shoddy caps, which in a few years usually bulge and leak. 8 times out of 10 this is the case, look for any bulging caps, and replace them with the same or a higher voltage rating.

Jun 19, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Blurry shaky pic


It sound like you have a leaky capacitor in your power supply, or video circuit, that is causing noise in the picture. I would have to refer you to a television technician in your area. This would seem like a simple repair. Leaky capacitors can become stable after they warm up.

I hope that I have provided the correct information that will assist you in the resolution of this issue. If you have any questions, please post back with a comment to this thread.
If I have helped you with your question and/or solved the problem, please take just a moment to rate this post. Thank you!

May 01, 2009 | Toshiba 50H81 50" Rear Projection...

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Checker board screen in mitsubishi


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.

Sep 04, 2008 | Mitsubishi WD-52525 52" Rear Projection...

2 Answers

My rear projection tv has a lot more green on it and slightly to the side and all is fuzzy!


the convergence ic's may be shot.. check surrounding electro caps too.

Jun 11, 2008 | Samsung Televison & Video

3 Answers

Prima LCD TV wont turn on


A friend had this problem. TV worked fine, then one day when he turned it on there was nothing. We unplugged and opened up the back of the unit then to look for a blown capacitor in the power supply. The 820uf 35V capacitor was ready to pop it's cap. This is not a common cap so it had to be special ordered.( make sure you ask for the exact cap as the ones that were provided had to be modified to fit, to big) I replace the blown cap with a 1000uf 35V one just to see if the LCD would turn on, it worked. We ordered the new cap ( 820uf 35V) and replaced it with the 1000uf 35V. However we do have another issue yet to be solved or wavy vertical lines on the screen when the satelite of regular TV is played. Not sure if this is a bad ground or a leaky cap or a tuner issue.

May 24, 2008 | Televison & Video

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