ok im getting a bit tired of this now, since a few days ago my psp turned on perfectly, left it off with the battery out and went to turn it on the next morning-nothing. i put the power plug and connected it, still wouldnt turn on, i swapped the ribbon with another and have tried three different powerboards with every combination i could think of-nothing still not turning on. i bridged the resistor by putting a big blob of solder on top, still nothing. took out the mobo, connected battery, power and powerboard to the mobo (in no case), again nothing!
when i put the battery in, there is dead silence but when i connect it to the power plug all i hear is high pitched noises around the motherboard area - no where near the powerboard.
please someone help as i feel tired of not being able to solve this problem
all help appreciated, thanks