motorguide 771 tour edition 71 lb thrust

[eddiec]

Did not see an old thread about this and apologize for starting duplicate if there was .
I have a 771 Motorguide Tour edition 71 lb thrust with intermittent short in head of unit. have moved one wire at a time to try to localize short with no success. There are 2 circuit boards with some type of transistor or module plugged into them but moving them doesnt help either. I can see no cracks in circuit boards that may cause this prob either. The only thing that works is to give the unit a good thump and it comes on, but you have to thump it every time. Any help would be greatly appreciated.

Thanks,
Eddie

 

[MWG2600]

Re: motorguide 771 tour edition 71 lb thrust

sounds like a broken solder joint. post a pic of the circuit bords and ii will try to point it out.

 

[Silvertip]

Re: motorguide 771 tour edition 71 lb thrust

Shorts blow fuses so unless that is happening you are not dealing with a short. As mentioned, cold solder joints, loose terminations in connectors, connectors that are not mating properly are just a few things to look at.

 

[eddiec]

Re: motorguide 771 tour edition 71 lb thrust

Thanks for replying MWG.
Will try to get a good pic of boards without taking the out but may have to take em out anyway to replace em. posting a pic on here is also gonna be a new experience. Working on that too.

 

[eddiec]

Re: motorguide 771 tour edition 71 lb thrust

Thanks for replying Silvertip,
You are right. Since its not blowing fuses I guess I do have other problems. Thanks for pointing that out

 

[eddiec]

Re: motorguide 771 tour edition 71 lb thrust

Think I have found the problem. There is a square black module plugged into the circuit board with the following written on it: Siemens VF4-11513C01, and AF157-03 REV D, and serial # 00-08-00328. This module clicks when I thump it and the motor starts, it clicks again when the motor stops and will not restart till I thump it again. Pretty sure this is the problem but not sure if its plugged into board or how it comes off.