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Thank you Axtyr! Can you tell me which SMDs you changed? I had sometimes problem with audio- from time to time sound level go down by itself. Fix is restarting machine. It’s happening on earphones. I don’t work with external speaker. Maybe i need to replace power cable too.

I know but the fact is after contact cleaner something shorted. The burned element is inductance, maybe some kind of fuse. I had the nut issue too. Machine is working again. What i did is to solder: INDUCTOR-SMD,2.2UH,20%,2012,0.16OHM,950M After that i feed it direct 7,6v to power strip with...

I will try contact him! Thanks

I will check but was working fine before contact cleaner.

The picture attached is first blow. I think contact cleaner shorted somewhere because i didnt wait and connected power right after spraying. Unfortunately i dont know what blown element is- resistor or inductance. I have no schematics so i hope someone to help me. My last option is to send it in...

Hello everyone I have a problem with my gpx 4500. I used contact cleaner for connectors and shorted something. I open detector and saw what is fried. Its resistor 0,4 ohm i think(check picture). It’s power button circuit . I changed it with same but as soon i connect battery it is burnt again...