I have stripped the varnish and reflowed solder on 2 of the modules, same issue.
I also replaced those caps and a few others on one of the modules same issue.
I need to find more time for testing but I think I need to find another donor test car to be sure I'm not chasing my tail with modules that are working and maybe the issue is elsewhere?
I also notice that the problem with the 5MPH up down cycle seems to go away some if you pick a taller gear but I think that just masks the issue.
Quote:
Originally Posted by targa80
Have you removed and tested the capacitors I have highlighted on the board in another post. Electrolytic capacitors C8 and C12 failed on a capacitor test for my module and I believe they were the reason why my module would not stay engaged. As noted earlier, C19 is attached to MOSFET transistor M1. I have read that this cap becomes the standard voltage against which the cars throttle is controlled through the servo amplifier.
|