The TV does NOT turn on anymore...it was stored for a few months and plugged in recently & actually worked for about 2 weeks. Now the blue light flashes continuously...what happened? What needs to be replaced? What part number do I order? is it the DM Board? If so, is the part number 921C549004 or 921C549008?
Try unplugging for 1 minute, then plug back in again. It appears that the unit is initializing, if it continues in that mode you may need the DM PCB
part# 921C549008
see the following website:
http://www.shopjimmy.com/catalogsearch/result/?q=921C549008
SOURCE: On a mitsubishi tv (LT-46149)
It is possible that you have a bad power supply, or the TV has been hit by a small power surge and if you unplug the set from the wall for 40Min., it will rest back to normal.
SOURCE: flashing power light
Fault with serial data; serial clock signal path. Serial clock path is OK, but data path must be traced. Seek tech support. This is a very skilled work.
SOURCE: LT-46133 FLICKERING BLUE LIGHT
Good day!!!!
That problem is usually cause of faulty capacitors on the power supply board..
Just follow this instruction to fix your TV..
1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter
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