sony (mbx-235) gray screen

nasser_pczone

the mbx-235 no video only trun on and gray screen
i do
update bios and ec
reball gpu and then chang it
reball vram
now my device trun on but only back-light appear and no character
any idea ????

RsM

Is there LPC activity? (post-codes)
Is resistance on 4 LVDS pairs ok?

nasser_pczone

hi
i not check the LPC because is difficult to connect the wires ......
no resistor near the LVDS pin... but pin 4 is broken from LVDS connector.. is important ?

Posted after 2 hours 41 minute 19 seconds:
hi
today when i change the SW1 for CRT use display on external was good but how i can use for self led ??? because pin number 4 is broken ???

RsM

need to measure resistance on 8 wires on LCD connecror on mother board.
4 pairs=8wires
read info in web.

nasser_pczone

hi thanks RSM
this is my LVDS connector how i check that ??? is pin 4 important ?

MSF113

The 4 pin is very important.

nasser_pczone

hi thanks for fast responding
i jumper pin 4 from LVDS to led cable connector directly but problem still was
i mixed up whats this gray screen ??? :ny_tik:

system boot OK on CRT monitor but on self led gary screen ??? please help me ?? :bra_vo:

Posted after 5 minutes 41 second:
for more info :

i change led with new one but no result

MSF113

Do You do this?

RsM писал(а):

need to measure resistance on 8 wires on LCD connecror on mother board.
4 pairs=8wires

With screen connected.

nasser_pczone

MSF113 писал(а):

Do You do this?

RsM писал(а):

need to measure resistance on 8 wires on LCD connecror on mother board.
4 pairs=8wires

With screen connected.

hi no i not test.. because i not understand how i must do - please help me this solution step by step and clearly . near the led connector no resistor is to check ? who resistor your mean ??
thanks

RsM

Do you understand difference between resistor ( a component) and resistance (the physical value in Ohm) ?

nasser_pczone

hi
yes i know the resistor is component on the electric board DC/AC board who reduce voltage

and resistance is value for this reduce voltage in Ohm unit

:ya_hoo_oo:

i understand what you told me

i must check the ohm on 8 wire ?? its that right ?? if yes- what value is true??

very thanks mr RSM

nasser_pczone

please help me

Posted after 2 hours 32 minutes 23 seconds:
i reball again gpu today but no result help meeeeee :ne_vi_del:

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sony (mbx-235) gray screen

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