Unit won't turn on, panel lights up for 1 second, then stays off.

Have you tried any of the reset commands?
Try these....please let me know the result:

Method 1
1. Unit power must be ON and unit must be in STOP mode.
2. Press and hold [CH UP] and [CH DOWN] ON THE UNIT for over five seconds. The unit will turn off.
3. Press [DVD POWER] to turn the unit on.

Method 2
1. Press [STOP, TUNE MODE] on the main unit and [>10] on the remote control at the same time for about 3 seconds until the message "Initialized" disappears from the television screen.
2. Turn the unit off and on again.

Method 3
While the unit is off, press and hold [VOLUME +], [OPEN/CLOSE] and [POWER] on the main unit at the same time for more than 5 seconds.

Method 4
While the main unit is on, press [POWER] on the main unit for more than 4 sec. (All the indicators will blink twice when the main unit is reset.)

Another possibility is to unplug the power cord......wait 30 minutes and plug it back in, possibly repeating the steps above. (Method 1 should reset the unit but maybe trying each of them may be necessary until it is reset.

The message appears to be one that displays when the unit is in a setup mode.

Thank you for your reply.

Sounds like a poor connection in the control or a faulty control module, I would return it as faulty for a new one. They seal those units up pretty good so we can't fiddle with them. Everyone gets a lemon sometimes.

Well the issue sound as if it were the timing unit. Some times work some times doesn't is a common symptoms of a timing unit. If you get the panel off take the timing unit and have it checked.

There is a way to tell if you have a bad board, or a bad panel.

1. Make the room dark and turn on the TV. Can you see it light up? If so, does it stay lit or turn right back off?

2. If the panel lights, but you have no picture, I would suspect the T-con. Some units now have the T-con incorporated with the main board, so you will need to check.

3. If you never get any light at all, then I would suspect the power supply.

4. If you only get light for a second or two, then you have a bad panel.

This is called the blinking green light of death-----only one of two things can cause this problem.

First: remove front speaker grill (IT PULLS OFF) AND remove inspection plate behind it; look for the two bundles of wires coming down and to the right from the front keyboard of the set.

Unplug both plugs you find (different and marked so you cannot mix them up-----the idea is to take the front keyboard out of circuit-----set will still function with remote as receiver is behind front screen)

Try (after 70 seconds) to turn on with remote

If it comes on---defective reset button on front keyboard----use set only with remote or remove and remove actual reset switch---it is located behind and part of frame for screen----entire front screen would have to be removed to get at it.

Second: if disconnection of the front keyboard does not help, the DM unit is bad.

As you look from back of set it is large metal box at extreme left side.

The blinking light is the unit trying to "Boot" up-----these have a problem where caps and a few other parts in that unit fail-----kits on the net are available----Mitsubishi no longer sells or services these units but PTS Electronics does repair them.


Let me know if you have questions and try disconnection of the front keyboard FIRST.


REGARDS, SD TECH

Hello Bobby
You haven't given enough details about the fault to your Combo. What do you mean my 'power button has coninuity on board'. I assumes that you get power LED at the front of your device lights up when you switch ON the main power switch, and the unit refuses to power ON and work further. If so, just make a factory reset to this set as it will reset the memory IC. To reset the unit to its factory reset do the folloing. But to do this, the power LED on the front panel of the unit should light up. Otherwise, the fault will be to its power regulator section. To reset the unit to factory reset:
[1] Turn the Power ON.
[2] Hold down both PLAY/REPET and FF on the unit more than 5 seconds. The power will shut OFF. Please ignore "NO CASETTE" warning.
[3] Perform initial set up refering to its user manual. You can see instructions to initial setup at page [16] of the user manual to your device. OK.

Replaced any capacitors on the power board that have domed tops.

Plug a light into the outlet used for the A/C, if the light does not come on when reset then the circuit breaker that provided the power to the outlet need to be reset or replaced.

I have had a problem like this in the past you can try taking the electric access panel usually on the side of the equipment. then look inside you will see a wiring harness inside and it literally takes nothing to bump it loose. This happens when people move these units they are pretty fragile and can be tempermental. Make sure the unit is unplugged while you adjust the wiring harness. If that deosnt work your display board is probably bad. Hope that helps

I'm having the same problem where it won't take a charged. If you left it with a dead battery for say 6 months, it probably ruined the battery. You should have a charger for house current and car voltage charger. I guess your dead in the battery like me. I'm taking it to Battery Plus to check it out. It only had a 1 year limited warranty. Good Luck.