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Green blinking light of death on Mitsubishi DLP TV means that the DM failed to booted up. I would advice you to replaced the 7 1000uf electrolytic capacitor on the DM board. Most of the time it fixed the symptoms. Please inquire at tvrepairworld.com if they have an available DM repair kit for V36 chassis (WD-57733 chassis).
Repair for the dm board is to replace 30 smd caps. Smd caps are harder to replace than electolytic caps, unless you have great soldering skills, it's easy to break a trace. Might consider just replacing dm board.
Did you also replace the power capacitors on the power board. Usually the DM board and Power board caps together will cause the steady blinking led the DM caps alone only rarely cause the steady blinking led usually its a combination of both boards capoacitors failing.
I used to have a WS55909 and had this problem. The light is supposed to blink for one minute while the DM (digital module) boots up after a power loss. If the light continues to blink indefinitely, there is a problem with that board. The DM power supplies are known to have faulty capacitors on these models and will need to be replaced. If I remember correctly, there are (7) 1000uf 25v capacitors and they should be desoldered from the board and replaced with 35v ones. Note that my TV model already had 35v caps but changing them solved the problem: electrolytic capacitors have a much shorter life than other components.
The DM is on the left side and is where ANT-DTV and the IR repeaters plug in. The power supply is the board above the main DM board inside the DM case. If this sounds too technical for you, get a new TV because a repair guy will charge you more than the TV is worth. In other words you could get a (30-46") LCD TV for the same price.
Did you check the caps on the DM board? They usually go bad after a period of time. Remove the DM board and the metallic cover and there should be 4 to 7 capacitors (There are different revisions of the DM board). Check these caps also, replace if needed.
The first generation mitsubishi V26 chassis which is what your model is has a bad habit of failing capacitors. The steady blinking green power light is related to the DM not completeing the boot up sequence. You can get the V26 DM repair kit at the following link which contains the replacemnent caps that are prone to fail and has the CD with step by step instructions on how to duisassemble the cjassis and replace the caps. Its very inexspensive and will usually repair that issue. Its listed under the repair kit category. http://servicemanuals.vstore.ca/
The four cap replacement in DM module repair is simplistic
and incomplete, as you found out. ALL defective DM modules
have bad SMC's ( small "top hat" caps) AKA surface-mount
capacitors that can be changed only by the most highly skilled
bench techs. We used to change out hundreds years ago in
camcorder circuit board repair.DM board repair is a much more
accessible,thus more "do-able". For more info.............T.