It will randomly accept power, and also charge the battery usually only after the device has been turned off for an extended period of time. Usually it will charge the battery to about 25% before it shuts off the charging, and power through the DC jack.
I first thought it was a software issue, but I've taken the battery out and had it directly on the adapter, and it was fine for about 15 mins then it just shuts off, and no longer accepts direct power. I tested the device on another charger inside an electronic store making sure it was within the specific standards. This also didn't work, but we got flickering as we put the DC jack in so I tired replacing the DC jack, and It's still doing the same thing.
So after some further troubleshooting, and downloading a schematic I couldn't find many of the part numbers on the board. I just went hunting with my multimeter to see what I could find.
I noticed that on PJP2 when the power was on pins 1, and 2 would raise from 0.0v to a max of 0.45v at which point if the board ever reached 0.46v the board would power cycle or even shut off for a few mins. So I traced the connection back looking for an unstable connection I kept seeing this 0.45v so I found the one part in the connection with a constant input, but a moving output. I found a R36W 4C with an input of 0.98v from cap 1h1 390 2.5v however the output from the R36W 4C was very inconsistent it would jump from anywhere 2.0v to .01v I'm thinking this is likely the cause of my issues, but just wanting form further feedback.
There was one other thing that struck me as a little off. Part PQ52 all the legs besides one read 19.40 one of the legs reads 8.40 which struck me as off, but it may just be how that part works.
Any help would be greatly appreciated.
I first thought it was a software issue, but I've taken the battery out and had it directly on the adapter, and it was fine for about 15 mins then it just shuts off, and no longer accepts direct power. I tested the device on another charger inside an electronic store making sure it was within the specific standards. This also didn't work, but we got flickering as we put the DC jack in so I tired replacing the DC jack, and It's still doing the same thing.
So after some further troubleshooting, and downloading a schematic I couldn't find many of the part numbers on the board. I just went hunting with my multimeter to see what I could find.
I noticed that on PJP2 when the power was on pins 1, and 2 would raise from 0.0v to a max of 0.45v at which point if the board ever reached 0.46v the board would power cycle or even shut off for a few mins. So I traced the connection back looking for an unstable connection I kept seeing this 0.45v so I found the one part in the connection with a constant input, but a moving output. I found a R36W 4C with an input of 0.98v from cap 1h1 390 2.5v however the output from the R36W 4C was very inconsistent it would jump from anywhere 2.0v to .01v I'm thinking this is likely the cause of my issues, but just wanting form further feedback.
There was one other thing that struck me as a little off. Part PQ52 all the legs besides one read 19.40 one of the legs reads 8.40 which struck me as off, but it may just be how that part works.
Any help would be greatly appreciated.
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