Hi,
I wonder if I could tap into some collective insight here while waiting for a manual and schem, (thanx Joe), here's where I'm at with the radio...
- The machine comes on, I get a display, all leds for frequency bands are on, Iguess that only FM, default, or the last band selected should be on) half of them dimmer than the other half. Can repeatedly turn radio off and on if no other function/button is selected. If I push a button of two, I can neither turn the machine off, nor select any other bands, have to unplug...
- When the machine sits a bit, off (power plug attached) It comes on, and now I am even able to tune a bit w/ the encoder, and even key in a frequency, and it changes, and plays a bit, then dies...Letting it sit a couple of minutes, it can be switched back on, and tunes and plays a bit more, starts to growl...and then the sound stops, its stuck and I turn it off..
While I'm not even a mediocre tech, it sounds like a cap is initially empty, charges, then starts to leak...IIRC, a power supply cap, or drop in ps voltage might be might explain the growl..... Maybe the same in the 5v supply? Or should I freeze spray the thing???
The radio uses, AFAIS, among others,
M5840 cpu MM5481 led driver? MM5368 oscillator TDA1571 mixer TDA5700 radio chip
Anyway, would really appreciate some help....
regards,
nikos