usb psu teardowns
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by sam_sam_samI got lucky that when I got home and was about to get some ice out of the ice dispenser I hear and see water running down the outside of the ice dispenser what the heck is going on here
At first I thought that the ice dispenser mold was cracked so I brought a new ice maker because this one has been in there for about 10 years now
Well I put the new one in and wait and I wait for the water valve to open and let water in no such luck well there is a way to check the function of the motor and the water valve on this ice maker just need a jumper wire “L” to... -
by edugimenoHi! My friend just brought this audio amplifier/speaker fro his music band saying they realized its got no sound. Led powers up but there no sound at all
I opened it and found 3 board. 2 of them are for input plugs and potentiometers, and the other larger board has the amplifiers for 2 large speakers that it drives
There's also a large toroid transformer that feeds a lower voltage to the first 2 boards and a larger voltaje (36x2 rectified close to 100v) to the power board. The power board has the plugs for both speakers
There is only one signal wire connecting the first boards...-
Channel: Troubleshooting Audio Equipment
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I have a water damaged Toshiba TV that was hanging nicely on the wall then over the summer we had a new multi-million pound boiler system put in and right where this TV was hanging is a nice new pair of water pipes for the radiators...
The TV hasnt been used for a fair few months but it was needed again the other day and needless to say, it didn't power on or show any signs of life (no standby LED etc). After checking the fuse in the plug (and that the socket it was plugged in to worked) I decided to get up some step ladders to take a closer look and low and behold! It looks like... -
by rzsnHello friends, so I have got a "water damaged" (or cola/beer/coffe .. something dark and sticky) G513I system - which has the board and schematics from this thread. After cleaning up all the visible sticky residue with water and detergent (thankfully mostly on the top/keyboard side), I have a partial success. IPA was of no use for cleaning this.
Using a bench power supply on the DCIN jack (as it seems that the PSU keying pin is not wired at all - series resistor R6003 is not populated), and using a shoring wire for the power button (either pin 5 on CN251 keyboard, or one... -
by abajorLike title says A2141 came in with Water Damage, customer desperately wants the data.
The actual water ingress doesn't appear too bad it sat for a day but was very dusty internally. I have no idea why L8504 was arced there is no apparent moisture there or around the LVDS cable; however, the LVDS to screen screw studs had popped off at some point and somebody tried securing it with kapton tape.
I had to create a micron wire pad jumper to reconnect the south side of the L8504 since the primary pad was blasted down to the vias.
That said after cleaning up the... - Loading...
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