The clock in my 82 300SD finally quit. From initial inspection, it appears that the resistor just above the crystal is cooked. Can anyone advise how to proceed? Id the cooked resistor the problem or just a symptom of some other problem? Does anyone have a schematic? Are these things DYI fixable or do I need to send it somewhere? Any help appreciated.
That happened to the clock in our most recent SL. What you will probably
find is that _both_ electrolytic capacitors in the clock are shorted. (All three discussed circuit elements are effectively in series across the power supply, so when both caps short the resistor takes one up the exhaust pipe.) Replace them. The resistor may in fact still be OK, IIRC it's about 120 ohms. Ours was OK, after two new caps the clock started working flawlessly.
-- Jim
