Directional Motor Controller Board (A-15680)
WH20, CV, Dr. Who or Party Zone
It's kind of a rare board and it's a big favor, but thought it was worth asking...

After spending weeks troubleshooting and swapping almost every part on this little board, think it comes down to a few traces, problem is I don't have another pin with this board to compare it too.
Hope someone that does has a little time to help? The Red and Black pins from LM339 doesn't connect anywhere. I think the Large RED should trace to the smaller reds, but I'm lost on the two Blacks.
(forgive the hacky solder work)
DirectionalBoard.jpg
Anyone have a DMM and this board sitting around that can help?
This has become a personal challenge to try and fix this board without giving up. If I knew how much work this would be, definitely should have ordered a replacement at the beginning...but too much time invested now.

Thanks ufo, that helps point me in the right direction.
If I can't figure it out, might have to ask my father-in-law to involved,
"He's got an ultimate set of tools" - Jeff Spicoli

Semi-Victory...a little jumper wire got the board back working, kinda.
Back.jpg
It will only spin Bigfoot's head in one direction, counter clock-wise.
Even in test mode, it won't reverse...
Anyone know what piece on the board could fail causing that?
Front.jpg