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If all capacitors were replaced correctly & all caps with bulging tops were replaced, It sounds like you may have other issues on the DM pcb. Possibly defective ICs. That would be the E2P module (a small pcb which plugs directly onto the DM pcb), which is specific to your particular model & serial#
Several years ago the only way to get the E2P, was thru the manufacturer, they also, used to make a kit that you could replace those ICs yourself. Those pcbs & kits were limited. So all I can do is wish you much luck if that is the problem.
At this point I would double & triple check the replacement of your capacitors.
when the green blinking light won't stop you have a bad dm module, it's about $800 just for the part. you could take it apart and try changing the big 1000 micrfarad at 16v capacitors on the dm board, but this almost never works on dlp's, and taking this tv apart to fix it is a major job, you need alot of money and a tv repairman to fix this.
You are not going to like this one little bit. The reason the LED won't stop blinking is because the digital module is not booting up. I have been fighting this model Mitsubishi for over five years now and the only solid fix is to send the entire chassis back to Mitsubishi for rebuilding. Pulling the chassis is a major job and with shipping costs and Mitsubishi's charges this repair usually runs around $750 to $850. However many owners that contacted Mitsubishi about this problem have gotten that portion of the repair bill coverd. That still leaves $300 to $400 for the tv shop that pulls the chassis and reinstalls it once it is rebuilt.
Replace all 7 capacitors in the DM Module on the DM Power Supply Board. If it is similar to the WS-65869 and WS-65513 it will have a metal enclosed DM Module at far left of chassis, looking from rear. About 4 or 5 connectors, screws, and Module slides out. Take top shield off. Take good notes or use digital camera or video recorder to make re-assembly easy. These capacitors are 1000uf@16 volts. They always check good, just replace them! After re-assembly plug AC in and wait 90 seconds or more (green Timer LED will stop blinking), then press Power button. If Timer LED doesn't stop, look for small pinhole (System Reset) and press switch with pen or small screwdriver, then wait for green LED to stop blinking. Then Power On TV.