laptop motherboard problem

[AMJATH.1122]

i have fully dead compal la-2871 mobo,in cpu_b+ line going to 36th pin of max 1532, 4 capacitors in line one of them is short,i replace that and power connect show battery charge led on,but few seconds the capacitor is again short and mobo is dead.the capacitor is 4.7U_1206_25V6K placed near by processor and four mosfets. can you help me.

 

[tpetar]

What is "compal" and "mobo" ? New type of computer ? :smile:



First try to find circuit for that motherboard.

 

[burt007]

i have fully dead compal la-2871 mobo,in cpu_b+ line going to 36th pin of max 1532, 4 capacitors in line one of them is short,i replace that and power connect show battery charge led on,but few seconds the capacitor is again short and mobo is dead.the capacitor is 4.7U_1206_25V6K placed near by processor and four mosfets. can you help me.

It is unlikely that same capacitor is shorted again, either voltage may be lower than rated or mounted with wrong polarity. Check the voltage at the plus pin and see what it is. Could be bad power-supply or higher voltage at that pin.