Portable Panasonic Record Player

[Bill R]

Today I finished checking all the resistors. They are all within spec. Sams does show a different value for 2 of the resistors. it shows one as 2200 ohm, but the one from the factory is 220 ohms. The other one it shows as 33 ohm, and the factory one is 12 ohm. I did change the bias diode. The error adjustment will change the output voltage from about 2.5 volts to 4.5 volts. It should be able to regulate at 3.64 volts. I did not have replacements for the error amp transistors. I may be back to the motor. It runs, but when it is connected the supply voltage drops to 5 volts with no load. It can supply 3.6 volts at that, but if any load is added to the motor the supply voltage will drop even lower and along with it the voltage to the motor. I am thinking it just cant regulate the voltage to the motor when it loads the power supply so bad. The power supply caps have been changed and it is healthy until you connect the motor.