Mitsubishi WD62725 GLOD (Update)

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Barry220
Mitsubishi WD62725 GLOD (Update)

Well after my last blog, I decided to check into the status of the DMD fan (fed by FN2 off of the PWB-Power board) and the Lamp fan (fed by FN1 off of the PWB-Power board). I did notice that the rear cover fan was attempting to spin right before everything shut down, so I at least know it was working although I took it off the back cover & cleaned it. Then on to the DMD Fan...I removed the DMD fan cover (see pages 14-15 of the V26 Service Manual) and I noticed an ENORMOUS amount of dust on the fan & the cooling fins behind it to the point where I couldn't even hardly move the fan blades by hand. I removed the fan (4 screws) and cleaned it up along with getting the dust out of the cooling fins.....guess what, I went back through the process of TV startup (I DID have to use the switch on the FC orange wire line out of the FMT), but lo & behold, the FREAKIN TV NOW WORKS!!! The dust must have been causing a load on the DMD fan circuit such that it was shutting everything down. These TVs are notorious for pulling dust into everything inside the TV, so I'd suggest cleaning all of the dust off the fans, etc while you have it broke down. Now back to reassembly of everything...UUUGGGHHHH!

 Many thanks to Paul de Serres [email protected] for all of the helpful info on getting this fixed. Now let's see how long it lasts....or maybe I should get rid of it while it's still running & buy another brand of LCD or LED?!?!?!

 PS- I think I was out about $30 in parts (including solder & desoldering tool) by the time this was all over with. My time.....priceless, but in all honesty, I spent about 16 hours between the disassebly, troubleshooting, removal & installation of the caps, etc.

jmora
Hi Barry

Hi Barry

Definitely is good advise and will be in consideration before any other troubleshooting is done in the future.

 

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