Re: Polk Audio PSW 110 subwoofer
I expect the - regulated power supply to be the same as the + regulated power supply.
https://www.badcaps.net/forum/attach...7&d=1529626412
I see two zener diode (red glass body with black stripe, one for each TIP Transistor, the Base pin of the TIP Transistor should be connected to the Zner diode. You need to check the DCV between the two legs of each Zener to see what you get, get the number as printed on the Zener will help also.
BTW, what are the P/N for those 3 ICs?
https://www.badcaps.net/forum/attach...9&d=1529536965
I expect the - regulated power supply to be the same as the + regulated power supply.
https://www.badcaps.net/forum/attach...7&d=1529626412
I see two zener diode (red glass body with black stripe, one for each TIP Transistor, the Base pin of the TIP Transistor should be connected to the Zner diode. You need to check the DCV between the two legs of each Zener to see what you get, get the number as printed on the Zener will help also.
BTW, what are the P/N for those 3 ICs?
https://www.badcaps.net/forum/attach...9&d=1529536965
Comment