Self Diagnostics
The V18 Chassis features Self Diagnostics to aid in troubleshooting problems that may cause the set to
automatically turn off or "shut down." The "Timer/Power ON LED" provides an indication of the sets operation,
and the possible cause of a malfunction.
1. Initial Control Circuitry Check
Immediately after the TV is connected to an AC power source:
• The LED flashes three times ... indicating the Microprocessor has initialized and is functioning
properly.
• If the LED does not flash ... the Microprocessor is NOT functioning.
2. Error Code Operational Check
To activate the Error Code Mode, while the set is OFF, press the front panel "INPUT" and "MENU" buttons
at the same time and hold for 5 seconds. The LED will flash denoting a two digit Error Code.
Note: The Front Panel buttons must be used, NOT those on the Remote Control.
• The number of flashes indicates the value of the MSD (tens digit) of the Error Code.
• The flashing then pauses for approximately 1/2 second.
• The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.
• The Error Code is repeated a total of 5 times.
Example: For Error Code is "24", the LED will flash 2 times, pause, and then flash 4 times.
3. Error Codes
The Error Code designations indicating a malfunction, or no malfunction, are listed below:
"12" ... indicates no error has occurred.
"21" ... X-Ray Protect circuit.
"22" ... Short Protect circuit.
"23" ... Horizontal Deflection failure.
"24" ... Vertical Deflection failure.
SOURCE: mitsubishi wd-62825 dlp
The WD62825 has a Digital Module located on the left side of the chassis looking at it from the rear of the set. It's housed in a metal box that can slide out of its holder after removing the trim screws.
The module has its own power supply board and there are a group of 16v/1000uf caps on that board which commonly fail causing the constant flashing standby light. Further back on the module is a small board about the size of a matchbook called the E2P module. Its SMT (Surface Mount Technology) caps also commonly fail which can cause the same symptoms. Techs can tell whether the E2P has failed by simply removing it, hooking the DM back up and trying to power the set. If it powers on the picture won't be much good - but at least you can tell what's keeping it down...
Back to the caps on the pwr board. If they've failed they usually will buldge visibly on top. And ESR is almost not necessary. In any event that's the nuts and bolts on this model.
Is it a job for a layman? Yes and no - you might strongly consider a tech if you don't feel comfortable removing all the connections that the DM has with the signal board. There are about six - multi-pin - wired connections to unplug and then sliding the DM out of the unit and carefully removing the screws and latching to take the DM top cover off...
Hope this helps.
Bill
SOURCE: 2001 Mitsubishi 65 inch HD1080
Ok, try this first. After attempting to turn on set after it shuts off push and hold the MENU and INPUT buttons at the same time on the front of the set for 10 seconds. This should acccuate the self diagnostics function in the micro and the power LED should start blinking a two sequence code. That code will narrow things down.
SOURCE: Mitsubishi DLP, green blinking timer light, tv won't come on,
This Chassis has been known for a slew of Capacitors failing throughout many of the Circuit Boards. The best way in my opinion to fix the set is to send the Chassis Assy to Mitsubishi for them to rebuild it. Some folks have has some success in replacing the bad Capacitors in the Power Supply, the DM Board, and the Format Board to get the set to turn on. These Capacitors are identifiable because the tops of them are bulging up.
It is a difficult set to work on and disassemble, this is Mitsubishi's Customer Service Number in case you need assistance. 1800-332-2119
I hope this helps,
Sky Assoc
The power supply will need to be replaced.
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