AKAI model# LCT42Z5TAP screen going R G B and white

[erskine]

hi all ,
I am repairing this akai lcd that came in with no power .
I replaced some 220mf caps on the main board and got it
to power up.
Now its just comes on with a red screen and it goes blue then green and then .
white . and repeats that cycle over and over.

anyone knows what causes this problem?
thanks

[mmartell]

Re: AKAI model# LCT42Z5TAP screen going R G B and white

Test patterns ? Try to find out how to do a factory reset maybe.

[erskine]

Re: AKAI model# LCT42Z5TAP screen going R G B and white

will try to find out how to factory reset it

[nomoresonys]

Re: AKAI model# LCT42Z5TAP screen going R G B and white

hi all ,
I am repairing this akai lcd that came in with no power .
I replaced some 220mf caps on the main board and got it
to power up.
Now its just comes on with a red screen and it goes blue then green and then .
white . and repeats that cycle over and over.

anyone knows what causes this problem?
thanks

have a sony KDL-46S4100 with exact same problem, saw where a few people fixed with another a board, didn't seem to work for me, unless I got 2 bad ones.

[erskine]

Re: AKAI model# LCT42Z5TAP screen going R G B and white

well i cant even find the info to fatory reset the thing .
seem unusual , but i downloaded the service manual . so will try
fixing it without replacing any boards.

[nomoresonys]

Re: AKAI model# LCT42Z5TAP screen going R G B and white

well i cant even find the info to fatory reset the thing .
seem unusual , but i downloaded the service manual . so will try
fixing it without replacing any boards.

same here, would like to try factory reset but don't know if I can with it in this state?