help philips cd-100

[chris chiang]

I just got a cd-100,but when I played around 10 hours later.I got a huge bzzzzzzz sound from it.
Anybody know what's going on with my cd100!
Thanks

 

[Netlist]

Chris,
Are both channels affected?
What's the DC voltage on pin 18 of TDA1540?

/Hugo 🙂

 

[chris chiang]

philipsCD100

What voltage should be for the pin 18 of the TDA1540?
Thanks

 

[chris chiang]

CD100

When I opened up the player, I found one of the PCBs didn't connect with ground. After I solidered the ground wire to the PCB, the noise was gone!