(ET) E12S, troubleshooting, questions

["e s" <stupidemail5 lycos com>]

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Found that the board was jumped out on the underside, thus was not doing 
anything.

When I removed the jumper, got nothing even with new caps.  

Did a bit of troubleshooting, while not a electronics guy, there really 
isn't much on the board. Turns out that pin 5 had a bad connection, so 
while the cap was charging, it never got the go command. Fixed it[however 
burnt an etch because I  forgot to  hit  the power disconnect before 
touching it with the soldering iron, whoops, seems ok] 

The only thing that does not appear to work is the section that  prevents 
rapid fwd to reverse at higher rpm. Only nasty when testing in neutral. 
probably gonna eat the rev relay up . 

Tried an rc with a 1 mfd from RS, no luck in lowering spark. Probably try 
one of the orange ones next time i need to order parts


cc to website



>>>>>>>...
http://s99.photobucket.com/albums/l317/t92006/elec-trak/?action=view&current=HPIM1648.jpg

The rollers are riding on the actual bracket. I made a heavier shaft of SS 
and the rollers are linen phenolic thick wall tube that I had from an old 
job. They ride on nylon that again was a leftover and happened to 'hammer' 
press into the phenolic. My yard is so irregular that I they do help stop 
making digs into the grass.

Blades are off for sharpening


So, I replaced all the caps on board one and while I get the RTN function 
for the PTO, the drive motor starts up as soon as I am seated. I will have 
to get my head around that board schematic again, any suggestions are 
appreciated. 

As for the fwd/rev relay, has anyone ever put a resistor cap network on 
the relay? They sell such things, and I tried building one with the 
biggest bipolar cap I could get!
 at radio shack, but it did not look like it did much. Only a 1 mfd cap, 
so that might be too small. 

Otherwise running well, think i am going to fab that front center roller 
as I have some troubles if the caster falls into the garden, or on some of 
my hills that run down away from me, it scalps pretty bad.



Keith