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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

07-18-2012, 07:59 PM
Re: Mitsubishi WS-52525 blinking green power light

Okay, finally got the SMDs and replaced them. Same problem .

When I get some more time, I want to try the video output to another device to see if the video is being output the same way or if it is good. If its the same, I guess it's scrap heap time.

Thanks again for the input.

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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

07-06-2012, 12:02 PM
Re: Mitsubishi WS-52525 blinking green power light

I have tried turning the tv on with the switch in the off position. After the light stops blinking, I hit the reset switch. After the light stops blinking I flip the switch and then hit the power button.

The tv turns on, but the display is still the same checkerboard pattern.

I am still waiting on the 2 diodes and 2 caps to replace them and give it another try.

Thanks for the help. I will update once I get the parts and install them.

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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

07-03-2012, 06:30 AM
Re: Mitsubishi WS-52525 blinking green power light

Well, it wasnt the lamp. I had found two connectors unplugged on the power supply that I had forgotten to reconnect.

Once I had those reconnected and followed the power-up procedure the lamp came on. However, now the screen has a checkerboard pattern of black and green rectangles.

I did a little searching and found that there are two smd diodes and two smd capacitors that are known to cause this. D8f00 & D8f01 and C8f26 & C8f29 are the components. After interpreting the code on the...

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Last edited by tervel12; 07-03-2012, 06:32 AM. Reason: changed URL
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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-26-2012, 06:23 PM
Re: Mitsubishi WS-52525 blinking green power light

I was thinking maybe one of the ribbon cable since they were a little tricky to get connected and routed through the dm board mounting plate but they are good.

I left the tv on for awhile and eventually the tv shut off and now the power light is red indicating that the lamp is blown.

So since there is no way that I know of to test one of these lamps, I will have to order a replacement.

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tervel12 replied to Mitsubishi WS-52525 blinking green power light

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06-25-2012, 08:07 PM
Re: Mitsubishi WS-52525 blinking green power light

I finally got a DPDT switch. (Been very busy lately). Got it wired up tonight and, Voila! No more GLOD! It actually works.

For the most part anyway. I have a static sound but no picture. Not even a display in the corner telling me the current input. I will have to go back over everything to make sure I have everything connected.

With all of these wire I may have missed reconnecting one of them.

Thank you so much for the help! ...

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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-17-2012, 06:16 PM
Re: Mitsubishi WS-52525 blinking green power light

I will get my hands on a dpdt switch and look for the orange and black wires and give it a try.

thanks.

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Last edited by tervel12; 06-17-2012, 06:16 PM. Reason: typo
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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-14-2012, 09:04 PM
Re: Mitsubishi WS-52525 blinking green power light

Duplicate picture, I didn't think the first one uploaded....

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Last edited by tervel12; 06-14-2012, 09:07 PM. Reason: Mistake.
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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-14-2012, 09:01 PM
Re: Mitsubishi WS-52525 blinking green power light

Ok, I have done some testing on the power supply and I have attached a pdf file with some voltage reading marked on the pdf. I am only showing the one corner of the power supply because there is no voltage on 12v, 10v, or 3.3v test points in this area of the board.

The 12v test point in the center of the board (labeled TP12VS) does have 12 volts, the 30v test point has 30.5v and the 15v test point has 17v.

I will do some more test points when I get time, but hopefully this will help.

...

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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-12-2012, 02:44 PM
Re: Mitsubishi WS-52525 blinking green power light

I will try to get some better pics for you. The black blob on the inductor was soldering mishap, got a little too close and melted it a little bit. I will also work on a list of tested components for you.

awyatt2, what do you mean by 'break two wires', simply disconnect them?

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tervel12 replied to Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-10-2012, 08:24 PM
Re: Mitsubishi WS-52525 blinking green power light

Here are the pictures of the DM Board....

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tervel12 started a topic Mitsubishi WS-52525 blinking green power light

in Troubleshooting TVs and Video Sources

06-10-2012, 08:18 PM
Mitsubishi WS-52525 blinking green power light

Hello all,

First off, I am still a little new at troubleshooting televisions but have had a bit of success so far with monitors.

I have a Mitsubishi WS-52525 DLP tv that has a constant blinking green power light. So far I have pulled out the boards and noticed that many of the capacitors were bulging. I went through and tested all of the electrolytic caps with an ESR meter and most of them were testing bad. I have since replaced all of the capacitors on the power supply, DM, FMT, and Signal board.

I also tested all of the fuses on the various boards....

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tervel12 replied to Dynex DX-22LD 2 seconds to black

in Troubleshooting TVs and Video Sources

02-17-2012, 05:19 PM
Re: Dynex DX-22LD 2 seconds to black

Got the new transformer today and just finished installing it and it works GREAT!!!

Thanks to everyone who contributed! This is the greatest, most knowledgeable forum!!

Thanks again!!!

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tervel12 replied to Dynex DX-22LD 2 seconds to black

in Troubleshooting TVs and Video Sources

02-12-2012, 11:26 AM
Re: Dynex DX-22LD 2 seconds to black

Those were my initial readings. Now it is measuring higher on the one secondary.

I desoldered it and remeasured. One secondary is measuring around 953ohms. The other secondary is 1045ohms. Well outside of the 3% so I ordered a replacement.

I will update once I get the replacement and install it.

Thanks a ton to all who contributed!...

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tervel12 replied to Dynex DX-22LD 2 seconds to black

in Troubleshooting TVs and Video Sources

02-10-2012, 07:39 PM
Re: Dynex DX-22LD 2 seconds to black

I have posted pics of the cap in question. I have also measured it again and if I leave the ESR meter on for a few seconds, it goes down to a measurement of .00.

I have also gone through and resoldered the joints on the transformer.

I remeasured the inverter transformer and now I am getting 953-956 ohms on pins 1 and 2 and 986-1005 ohms on pins 3 and 4. The secondary should be 960 ohms. Which kind of makes it sound like the transformer is out of spec since it is over 3%.
...

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tervel12 replied to Dynex DX-22LD 2 seconds to black

in Troubleshooting TVs and Video Sources

02-10-2012, 08:35 AM
Re: Dynex DX-22LD 2 seconds to black

Attached are the pictures....

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tervel12 started a topic Dynex DX-22LD 2 seconds to black

in Troubleshooting TVs and Video Sources

02-10-2012, 07:18 AM
Dynex DX-22LD 2 seconds to black

Hi all,

My 22" Dynex LCD TV has the famous 2 seconds to black problem. When the tv is plugged in and powered on, one pair of lamps light briefly. The other pair of lamps get just a little glow to them. After a few seconds, it repeats this and then nothing until it is powered off/on again.

I have tried swapping the lamps and tried a second set of known good working ccfls in both positions and get the same result. So the problem lies only on one side of the inverter circuit but not the other. (The lamps closest to the outside edge are the ones with the problem)...

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tervel12 replied to Norcent LM-2265W with Blank Display

in Troubleshooting Computer Displays

01-20-2011, 10:49 AM
Re: Norcent LM-2265W with Blank Display

I have searched both but have not been able to find any other Norcent monitors. I have found some TVs, but it seems like it is a pretty scarce brand.

Off to ebay then! Maybe somebody out there needs the screen.

Thanks....

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tervel12 replied to Norcent LM-2265W with Blank Display

in Troubleshooting Computer Displays

01-20-2011, 10:10 AM
Re: Norcent LM-2265W with Blank Display

Aside from trying the caps, then this thing is pretty much trash I guess?...

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tervel12 replied to Norcent LM-2265W with Blank Display

in Troubleshooting Computer Displays

01-20-2011, 09:11 AM
Re: Norcent LM-2265W with Blank Display

Any way to test it?

Also, is it replaceable?

Thanks.

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tervel12 replied to Norcent LM-2265W with Blank Display

in Troubleshooting Computer Displays

01-20-2011, 07:00 AM
Re: Norcent LM-2265W with Blank Display

I do not have an ESR meter. I removed the caps and put them on my DMM with the ohms set to 20K. I can watch the resistance climb as though the cap is charging with the leads connected to the right poles. If I reverse the leads, it shows an infinite reading immediately.

Good to know about I104.

Since there is no image from either the DVI or VGA line, could the main IC on the logic board be bad?

The only image I ever see is the No Signal message with no input connected....

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