On Friday, September 29, 2017 at 4:27:32 PM UTC-4, wrote:
On Thu, 28 Sep 2017 14:38:47 -0700 (PDT), wrote:

A different approach would be to mention the problem. Perhaps we can suggest a fix without the need for the manual.

Dan

Hi Dan,

I should have mentioned I am a retired service tech (many years) in consumer
products (TVs, VCRs, Stereos, etc.) repair.

The problem has to do with a long delay 30 to 40 seconds when you turn on
the Radio before you hear the sound. This happens when the radio
has not been turned on for several hours. If you turn on the radio in 15
minutes to a few hours after it was on, the sound "comes on" very quickly.

I know the technique to isolate the faulty stage. The schematic would save
me time (I won't have to circuit trace).

John


Try preheating the radio. If it then comes on immediately you've almost certainly got a lazy small value electrolytic on the board.

If you have an ESR checker, run through all the caps after the radio has spent about half an hour in the refrigerator.

I still make an excellent living repairing consumer electronics, and using time saving shortcuts allow me to do so. Very few things these days has a full schematic for it. Most of the time I'm piecing them together from IC datasheets.