I have Mitsubishi TV DLP Model number WD-52527 has no sound and no video- picture but just only rapid Green LED blinking Timer after you plugged power cord to wall. Green LED blinking Timer for 60 seconds, stop for 30 seconds then come green blinking Timer back on repeat as above and not continue blinking over 70 seconds. So I tried press hold the Device and Menu buttons same time for 5 second at Front Panel(not used Remote Control) diagnostics not a work there has no code but just blinking as above I Know how to read code by count light but Diagnostics is not work I checked Digital Media (DM) board has no bulge or swollen capacitors, TV has no card reader in, Does it suppose to have to installed card reader in tv?
Please help me how to troubleshooting with tester I do not want to pay tv repair service will cost me $95 to $200.00 to check. I would replace DM and FMT baords but I do not want to be guess to buy parts unless I secure find problem first before replace parts