Quote:
Originally Posted by smorelen
There is a 5 volt regulator on the lower printed wiring board within the control assy. This regulator probably supplies the 5 volts for all the digital logic ICs in the control assy. A 33 uF capacitor on the output side of the regulator had gone bad (capacitance much too small) due to age, temperature extremes, etc. The regulator needs a minimum of 22 uF to work properly, per the manufacturer's data sheet for the regulator. I replaced the capacitor and another one just like it that was found on the upper printed wiring board...they both had the same bad appearance on visual inspection. My control assy part number is 124 830 18 85. Assy works fine after repair.
|
This is good information. Power supply capacitors are the bane of all older electronic equipment. Did you happen to take any pictures of the disassembly/repair/re-assembly process.
Jeremy
__________________
"Buster" in the '95
Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
|