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4.3" widescreen LCD display with a 333 MHz Processor. Model Number PSP98510. Repair for this device requires common screwdrivers and prying tools.

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Issue with power fuse

Hi there, bit of an odd one. Perhaps someone with a bit more electronics background could advise what the issue is here.

Issue: PSP doesn't power on. Charges fine.

On investigating the issue I checked the power fuse (Marked TB) with a multimeter to see if that was the issue. The fuse showed continuity so assumed it was fine.

Then by accident I checked the fuse again while a battery was connected and as I test the fuse with the multimeter the PSP powers on.

Is the fuse the issue? Seems when I bridge it that it powers on automatically, but why if the fuse is giving me audible continuity when I check it?

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Also when I set the multimeter to ohms to check the fuse it shows as 0.00 as it should.

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Solución Elegida

Found the issue, the ribbon cable between the power switch and the mainboard was faulty. When I was bridging the fuse it was somehow triggering the power on sequence bypassing the switch.

Swapped the ribbon cable with one from another faulty console and worked perfectly.

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Spot on. just finished fixing an old psp 200x with the action key ribbon and switch board from a decommissioned psp 300x.

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ainda nao testei mais levei a um tecnico que me indicou esse problema (troca do flat) ainda esse mes vou comprar e trago nova resposta

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Brendan estará eternamente agradecido.
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