How to Troubleshoot & Replace Bosch AP4434739 / 00676960 Control Board

Installed new control board because you could see a dark spot in the old one were it looked like it had gotten hot. Also installed dispenser to fix soap issue. Both very easy fixes. 

I searched out the problem on you tube university and some people said it was a cold solder joint on the control module board. I decided to replace the module.It was a job most people can do.You would need a torx driver and a small screwdriver. Please search for the video on u tube first. For safety I would cut the power to the dishwasher before starting the job.Keep in mind that if your dishwasher runs for hours there is a problem .....dont let it go.,Before you buy a new one do research. Some of the new ones cant do the same job as the old ones workin properly. 

I bought the control board, watched the Youtube video, opened up the unit, snapped out the old one, and snapped in the new one. Almost as easy as that. Two minor problems: First: I didn't look first, and the video didn't mention that some models (mine) have star-head secure bit screws. Second: the tabs that hold the control board into the housing aren't quite visible from the front -- at least not so I could figure out what to press. So I took the back off the housing in addition to the front. A few more screws and minutes. Total time, not including searching for my selection of star bits, was about 30 minutes. The repair shop quoted $880!!!. 

The new part was shipped promptly but the old display decided to start working again before the new one showed up so I hope i have the right back up part if the old one stops again. 

I replaced the control board. 

After following the troubleshooting procedure the result showed a faulty control board so I ordered it and replaced it, took about 15 minutes to replace 

Replaced the control board assemble and now works like when it was new. The water gets hot and the cycle time is proper and the dishes are clean again. Took about half and hour start to finish to replace the part.