1 - 2 V on the positive supply
Sounds like a shorted device on the + rail. Have you measured the resistance to ground of the + supply?
Sounds like a shorted device on the + rail. Have you measured the resistance to ground of the + supply?
Hi!
Dmfraser, didn`t see your post until now.
After I got the player working again, I left it powered on over night. The next morning the sound were fine in both channels, and it`s been fine since then.
Thanks for help.
Tor Martin
Dmfraser, didn`t see your post until now.
After I got the player working again, I left it powered on over night. The next morning the sound were fine in both channels, and it`s been fine since then.
Thanks for help.
Tor Martin
Sharp IC
That is a specialized device. It looks like besides being a low dropout regulator, it generates a signal to hold the microprocessor in reset until the outvoltage has stabilized. I know of no deplacement device. I also know that Sharp semiconductors are not that readily available. Its a good thing you found it was a diferent fault.
One rule of troubleshooting equipment that does not work after you just worked on it is to go over everything with a magnifying glass. Specially if you soldered something on or above the PCBs.
Dan
That is a specialized device. It looks like besides being a low dropout regulator, it generates a signal to hold the microprocessor in reset until the outvoltage has stabilized. I know of no deplacement device. I also know that Sharp semiconductors are not that readily available. Its a good thing you found it was a diferent fault.
One rule of troubleshooting equipment that does not work after you just worked on it is to go over everything with a magnifying glass. Specially if you soldered something on or above the PCBs.
Dan
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