Tracing is sort of the problem. I was hoping some had a similar board laying around and could tell me the value.
With all the other 100 parts I’ve gleaned off of other donated ET’s wish I hadn’t tossed the old board.
To me, it appears that the closet pin is #9. I just have forgotten who to translate schematic since my old Heath Kit days in the late 50’s. (yes I am an old fart and now enjoy the newer electronics, apple watch, MacBook Pro, Ipad7 & iphone11 Pro, VoIP phones, .
Stay safe & stay healthy,Hank
Ralston Gaesser Agency
Email: Hank RalstonAgency com
Office: (585) 697-0880
Cell & Text 414-0880
"NAVIGATING YOUR INSURANCE NEEDS"
Proud Member of Rochester Rotary since 2001
From: Ben Griffith <griffithba+ET gmail com>
Sent: Friday, May 29, 2020 3:33 PM
To: Hank Ralston <Hank RalstonAgency com>
Cc: Elec-Trak <elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Resistor on board 1 burned out? ET15
I can see a trace through the board that has the resistor in question, a transistor, and another resistor. That trace goes to a pin at the top. If you know what number pin that is you should be able to narrow down which resistor it is on the schematic.
On Fri, May 29, 2020 at 11:06 AM Hank Ralston <Hank ralstonagency com> wrote:
Apologize leaving out that model. Also, finally got my scanner back online so here is the schematic for Board 1.
The penciled in numbers are the numbers on the wire connected to the board’s 1-15 terminals.
Again, the FWD switch doesn’t move, but the REV on does. Have swapped it out with same outcome?
Could there be a sort in the motor housing? Worked perfectly prior to reattaching?
Any light you can shed on this is greatly appreciated. I want to have it running perfectly before I consider donating.
I figure with all new electicl swithes in the throttle, 2 new boards and new brush assembly & belts it has another 4-6 years easily.
(Now on to my commercial insureds that need my may years of risk management advice. So far it appears that 7 camps for almost 3,000 campers with diabilities will not be open this year. Tough for them, tougher for the families needing a week break.)
Thanks, stay safe & stay healthy,
Hank
Proud Member of Rochester Rotary since 2001
Cell 585-414-0880
From: Ben Griffith <griffithba+ET gmail com>
Sent: Sunday, May 24, 2020 9:36 AM
To: Hank Ralston <Hank RalstonAgency com>
Cc: Elec-Trak <elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Resistor on board 1 burned out?
I'm only familiar with the E20, which doesn't have that board. Hopefully someone with the same model as you will be able to chime in.
Ben
On Sun, May 24, 2020, 9:26 AM Hank Ralston <Hank ralstonagency com> wrote:
Hi Dave & Ben,
After any holiday celebrations you may have, could you give me some idea of:
- The value of the resistor that needs to be replaced, see pictures below
- Ideas of what may be causing it?
I have been going over this in my mind a lot. The only other change I made after testing the motor prior to reteaching it to the frame may have been to snub up the main connections to the motor itself.
While doing this I used 2 wrenches, one below the cables and one above. Through I tried to keep the bolts stationary it still may have moved slightly. If the internal lead in the motor did happened to somehow ground itself, I think this would have caused the fuse to blow. I’m still at a loss as to what is causing it.
Meanwhile I’m getting my steps in using my Ego walk behind. Yes, I’m very much committed to battery operated devises. Both for convenience, lower dB & lower carbon footprint.
Stay safe & stay healthy,Hank
Fairport, NY 14450
585.414.0880
From: Hank Ralston
Sent: Monday, May 11, 2020 4:50 PM
To: admin elec-trak com
Subject: FW: Happy Birthday from Elec-Trak Owners Club, ? Resistor on board 1 burned out.
Appreciate the email. The present of share knowledge has been the greatest gift throughout the years.
Speaking of which I need a little advice from the electronics masters..
I recently put in new Brush assembly in the drive motor. I hooked it up to all of the Cables including the field wiresBefore I reattached it to the underside of the tractor.
It operated smoothly through all seven electric speeds forward and three speeds in reverse. I don’t one through the fun of jacking the motor up to the underside and attaching the Belts and 4 bolt. I did a short test cut of long but knew I had to wait a while till it dried it out further.
Taking it out again it would only go forward no longer go in reverse. When going forward it barely go through a few speeds and I could tell it was some problems so I took it back to the garage I started checking all the cables again. I noticed that theI noticed that the foreword relay was not working when you shift into reverse.
While in neutral and observed that a small ceramic resistor was overheating. It was just below the ninth connection on the board. See photos attached. Note that this is a fairly new board I Purchased a couple of years ago and unfortunately I can’t tell exactly what Resistor I should purchase to replace it since it’s all blackened..
Long story short I’d like to know if someone could tell me;
- exactly which resistor it is so I can replace it
- any ideas of what I should check to see what may have caused this.
Again, as far as I can tell I’ll All relays are functional and to double check I even swapped out the FW relay and it had the same lack of action as the prior, both had continuity through the magnet.
On Mar 21, 2020, at 4:57 PM, Elec-Trak Owners Club <admin elec-trak com> wrote:
Hello hank ralstonagency com,
We at Elec-Trak Owners Club would like to wish you a happy birthday today!