Sony m851 mbx-217 rev:1.0 at_bradj missing

NConstantinou

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Join Date: May 2017

Posts: 351

Country: Cyprus
#1

Sony m851 mbx-217 rev:1.0 at_bradj missing

01-21-2023, 02:07 AM

Dear all

i have the above board power on no display.
i have all voltages in all coils.
i am missing AT_BRADJ on U23 pin2 which is an input of AND gate. i have 3.3v on pin 1 and pin5. pin4 is 0v but no short.
the AT_BRADJ signal is coming from U53 which is LVDS control memory.
what do you do in such a case!

Thanks
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NConstantinou

Badcaps Veteran

Join Date: May 2017

Posts: 351

Country: Cyprus
#2

01-21-2023, 03:55 AM

Re: Sony m851 mbx-217 rev:1.0 at_bradj missing

I noticed also INV_EN is missing which is comming from the second i/o vga control memory

Last edited by NConstantinou; 01-21-2023, 04:02 AM.
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Sony m851 mbx-217 rev:1.0 at_bradj missing

Sony m851 mbx-217 rev:1.0 at_bradj missing

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