Toshiba Satellite L500 - No power on
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Re: Toshiba Satellite L500 - No power on
Hi anybody can suggest me anything , what can i burned when removed PQ14 ???????Comment
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Re: Toshiba Satellite L500 - No power on
Hi, I'm not the expert, but I'll trying to explain what I already know.
Old compal design a little bit different than new, newer mobo which released it 2012 till latest
- the old compal using IC comparator LM393 as vin detector and precharge circuit.
- power button has 15-17v
- push pull transistor used to protection circuit if there are over voltages or over currents to flow to main rail (B+) in this case PQ11 and PQ14. if B+ was ok both of them work together can send "command on" via gate mosfet PQ8 and PQ9 and vice versa
- need more attention understanding schematic and of course spending your time.
- finally, read.... many threads on this forum about power issue, many people has experience likes whaldsz, atsio, khaahk, th3_uniqu3, dycc, highpulse, dj_ricoh and the others that can't I mentioned one by oneComment
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Toshiba Satellite L500 Series Laptop Schematic
LA-4982P...-
Channel: Schematics and Boardviews
11-01-2024, 02:40 AM -
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