Forum > LCD TV forum

samsung le40r88bdx clicking disconnecting the LVDS powers up

(1/4) > >>

Quick_Silver:


hi hope som1 can help sort this out This was given to me so i have no idear of its history and its seems boards have been removed be4. Have tested powerboard and it seems fine correct voltages ect.

tv only powers up when the LVDS is disconnected other wise just relay clicking

i'm wondering if some1 put in the wrong driver or main board. as i tested with a diffrent screen driver board not the 1 for this screen  and seemed to power up correctly no relay clicking backlights on and had sound but did not connect the screen as this was not the right driver but seems to work fine

 
have disconected screen removed power and main board and tested on bench  still no go as soon as lvds plugged in relay click. Is the main board  paired with the screen driver board therefore the wrong main board could be fitted ??

Turnip:
Hi QS,

  May not be useful, with all that board changing stuff, but there are reports of P/S 1000mfd caps being suspect.

   Might help - Chris.

Ohm Supplies:
I'd of thought it would be unlikly the main board is the worng type as if it was from a different model, it simply wouldn't fit.
It could be that its locked up so you can either try to get the set into service mode from cold or see if the fault is on the main board, afte you've checked the caps Chris has told you (top r.h.s. of the psu)

regards
ANdy

Quick_Silver:
Caps look fine and voltages ok.

have blind reset by disconnecting  LVDS

but still having the same  problem

tv john:
I have repaired about 10 of these tv's in past 2 years and except from the power caps, a d/j on the inverter tx(power stage),a faulty screen driver/t-con/scaller pcb the eeprom was guilty, which has been
mentioned before.

It is available from CHS at a reasonable price inc p&p.

Best of luck  John.

Navigation

[0] Message Index

[#] Next page