Motherboard dosent boot,light on board just blinks continuosly

Is this a plasma TV?

Are you sure the polarity of the charger is the same as the original? Some have the positive in the center and others on the outside. This could be the issue.

Thats one of the famous capacitor issue most likely. Thats the V26 Chassis DLP and usually that symptom is caused by failed DM and Power Board capacitors. There is a repair kit that will work in alot of cases with that symptom. Its called The V26 Chassis DM / Power repair kit available at the following link with detailed instructions http://tvrepairworld.com/mitsubishi_repair_kits

If your keyboard linked three lights thats mean its not a problem of motherboard check your RAM or Connection of HDD.

Regards.
Andy

Hiiiii please check your hard disc data cable. and also check *********** board support the hard disk. 

You have a bad main board most likely. You can try unpluging it for 5 minutes.

It is the motherboard's fault...

Either bad capacitors -vented - on power supply board or bad E2P eprom board on DM board.Probably the capacitors-4-1000Ufd and 2-3300ufd.You should get expert help from reputable tv shop.Not really do it yourself fix either way.

when the light goes red it should be blinking a two digit code and repeat itself continuosly. slow blinks are the first digit and fast blinks are the second digit

Very expensive to fix.You hve a bad ysus board.Nec will re-build theboards as a set 1000.00 plus