I replace the bulb and I'm getting a blinking error code 3 4. How do I fix? Mitsubishi WD-52525

we are having the exact problem with out tv even after replacing the bulb. have you solved your problem. out tv is 5 yrs old.

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the speaker grill pops off and use a philips screwdriver to remove to door slightly left of center. the lamp is held in with 3 screws, might need a flat head driver to get em moving. this tv is known for bad capacitors on the power board causing false lamp errors, and also other caps going bad too. let me know if you need more assistance. fixing all caps = 300-500 $ estimate

push the menu and device buttons on the front of the set both in together and hold for 6 seconds and see what two digit error codes blinks. It will most likely blink a 3 pause then 4 and then repeat the sequence indicating a 34 error for lamp abnormality which is almost always caused by faile capacitors on the Power pwb.

replace the lamp/bulb

Did your replace lamp come on the screen or did you lose picture? Just because the LED indicator suggest replace lamp it doesn't mean it needs it. If your pix was dull or loss of brightness then replace it, if not then just reset your lamp timer, check your owners manual for instructions.

do this. press and hold device and menu button on set for 5 seconds. this will retrieve a 2 digit error code .. the led will flash the first digit and pause the flash second digit. This unit is known to have capacitor problems on the power board. getting to these capacitors involves taking alot apart. let me know error codes and we can continue troubleshooting

replaced 2 capacitors 3300u/35v. At the power board.

do not tuch the rest of the chassis...............

error code 37 is either the dmd fan or the lamp fan. you can see the dmd fan with the cover off. you cannot set the lamp fan as it is under the light engine. I guess the easiest thing to do is get a lamp fan 299P282010 and a dmd fan 299P283010 and change them both.

http://www.chrisandnat.com/Projects/BlinkingTV/blink.htm
http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf
http://www.fixya.com/howto/h159332-mitsubishi_dm_board_repair
http://hdtvoice.com/voice/showthread.php?t=32186
replace DM

http://www.chrisandnat.com/Projects/BlinkingTV/blink.htm http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf
http://www.fixya.com/howto/h159332-mitsubishi_dm_board_repair
http://hdtvoice.com/voice/showthread.php?t=32186
Suspect the DM PCB part # 934C116002