Main system power goes off automatically

If you pulled the cover and only see one fuse, and if it is not blown, then you need to search deeper for the problem. All replaceable fuses on the main board are viewable.

Check manufacturing date, if more than one and a half years, think of replacing batteries.

Check and replace the main system control memory IC. It is faulty.

Good day!!!


if the command signal from main board to DMD board missing the problem could be the main board..

I already found the board online for only $75 on this site http://www.discounttvparts.com/6871VSMS28B_p/td-1169.htm

$100 on this site http://www.ebay.com/itm/NEW-LG-MAIN-UNIT-6871VSMS28B-6870VS2273C-/260877125964

Hope it helps..

just add a comment for any follow up questions..

Thank you

Hello,
There is a fuse inside the main hub where the cables go inside the system. Unplug from the wall before you start working and remove main center cap where the cables is at to see the fuse.
Thanks.

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hello brother i have sony k800 i flash it it work properly but few days ago it goes white screen after few seconds when phone power on i again flash it now it is dead plz help

if you found the main module alarm get diconect and the alarm is gone too lokinfor under the dash sometimes is located behind the ac controls or radio area

DO U HAV POWER FROM GEN ?

Fixed it by replacing a burned resistor.
100ohm 1 wat designation PR010 on the main pcb.