Repairing It Yourself
If you decide to repair the TV yourself, I recommend that you obtain a copy of the repair manual for your Mitsubishi TV from the Techlore
website by going to Mitsubishi Service Manual
. It will provide some direction, however it is technically written and may be difficult for the NOVICE to understand. If you are unable to locate the the service manual for your specific Model at the above Techlore
link, you may need to purchase the service manual online
If you decide to have a service technician do the repair, insist that the "DM" module is removed from the TV and ONLY the four 1000uF, 16V Capacitors (Caps) located on the DM Module are replaced. MOST techincians
will INSIST on replacing the entire DM Module and not simply the capacitors. The cost is about $200 for a technician to replace the capacitors and $1000 for replacement of the DM Module. As you will read below, doing the repair yourself will cost less than $4.00 for the 4 Caps.
A Few "Cautions"
- Keep yourself "grounded" when working with the circuit board. Static electricity will destroy electronic components.
- When replacing the Capacitors, press them "down" onto the circuit board as far as they will go, hold them down, solder into place and clip the excess terminal lengths flush with solder. Only by doing this will the metal shield (little silver box) slide down and over the circuit board during re-assembly. There is not a lot of clearance when doing this, as the 105C Capacitors are slightly longer that the originals. With minimal effort everything does fit back together.
- Use ONLY 105º C capacitors with a voltage rating of 35 V.
- Re-insert the DM circuit board into the Mother board; press virmly and ensure a proper seat of the DM board. Next, slide the metal case down and over the DM circuit board. Refer to my "Lesson Learned."
- Press the "reset" button and hold for 10 seconds .... Does TV turn on and blinking green light turn to solid green.
- Unplug the TV from it's power source for various times, ranging between 5 minutes and 24 hours..... Does blinking green light continue upon plugging in the TV.
- Disconnect ALL devices from the TV; DVD, Tuner, Cable Box, unplug the TV for various duration times .... Does blinking green light continues upon plugging in the TV.
- Press Power and Menu buttons simultaneously and hold depressed for 20 seconds .... Does blinking green light continue to flash.
- Press Power and Display buttons simultaneously and hold depressed for 20 seconds .... Does blinking green light continue to flash.
- Insure that no front panel buttons are inadvertently stuck in an "engaged" position.
If none of the above test resolve the issue, then the failure lies in one of the following:
- DM Module Capacitors have FAILED.
- DM Module is defective.
- EEPROM Board failure
- Power Supply failure.
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