landwerlen
New Member
i have a sony LBT D550 stereo/CD player that quit working correctly after getting wet....at first it would function great after about 5-10 minutes warmup..now nothing.....my inlaws have the same unit, and i swapped out the power amp module, and was rewarded with a perfectly functioning unit....i ordered the 4231 from MCM.....and the unit worked for awhile, but has since failed again
i downloaded a data sheet on the 4231, and have begun troubleshooting.......im not an expert in this field, but a quick study.....Vcc is a whopping 124VDC (the data sheet calls +-75V the max), but i want to make sure im measuring this correctly..any help would be appreciated
im getting left and right audio from the volume control (as viewed on my scope on pins 3 and 20)
there is also a mute feature that i havent looked into yet (pin 8)
the data sheet can be found @ **broken link removed**
thanks in advace
i downloaded a data sheet on the 4231, and have begun troubleshooting.......im not an expert in this field, but a quick study.....Vcc is a whopping 124VDC (the data sheet calls +-75V the max), but i want to make sure im measuring this correctly..any help would be appreciated
im getting left and right audio from the volume control (as viewed on my scope on pins 3 and 20)
there is also a mute feature that i havent looked into yet (pin 8)
the data sheet can be found @ **broken link removed**
thanks in advace