On Tue, 28 Dec 2004 04:22:00 GMT, "NSM" wrote:


"none" wrote in message
.. .
| I'd posted earlier about a hum problem in a Nakamichi CR-4A cassette
| deck.
| Unfortunately it wasn't loose ground screws.
| I found a couple of burnt resistors on the Power Supply PCB mounted on
| the rear chassis panel
| The part# for the board is 0B60525
| the resistors in question are listed as R405 and R403, they'r to badly
| burnt to tell what value they are.

That would make me guess that the main filters might be bad.

N

Correct, The PS pcb has staged noise filters to keep out power
transformer and line noise.
Which, with half the resistors being fried would explain the low level
buzz.