This Whirlpool Double Oven model RBD305PDB12 would have a black screen and not work intermittently. It would stop working for months and then would come back on its own and work for anywhere from a few days to weeks only to go back to a black screen and not work.
Upon removal of the control board there is a blown area where there used to be a ceramic capacitor as part of the a/c to d/c bridge rectifier as shown below:
https://drive.google.com/file/d/1pqPHS9IiFLdxxlQQ1EC7C6CX6p_Ue8Yz/view?usp=sharing
The diode that connected to the blown ceramic capacitor was removed and upon removal the pad on the pcb for the diode came off. This pad area was likely already damaged causing an intermittent open circuit (see picture below):
https://drive.google.com/file/d/1rWMlrwLfhbJNxhbfClCU2yKun9rqh1ox/view?usp=sharing
Repair options I am contemplating are:
1. replace all items in the yellow box shown in the picture below:
https://drive.google.com/file/d/1fLfoaEdpz2zbsLk1dPEMG9bOA6gJ9Hjx/view?usp=sharing
2. replace the entire bridge circuit with a ready made one like this:
https://drive.google.com/file/d/1Is9QOZB8vmVIki7rdYBs04mxY-FFsYnz/view?usp=sharing
In case of option 1 suggestions on how to repair the damaged pad area and blown capacitor will be helpful.
In case of option 2 how can I connect the external bridge rectifier to the oven's control pcb (see the picture below), and what components have to be removed and what components remain to make the circuit function as was originally designed?
https://drive.google.com/file/d/1y4LFVXfZHLgJVGskIioYzmfbErOPy2Wu/view?usp=sharing
I am in the process of creating a drawing so that I can see what connects to what on the oven's pcb control board so that if repairing the current board I can solder the components correctly where the pads have been damaged. Any help or suggestion in this regard will be helpful. Once I have completed the drawing I will post a picture of it here.
Thank you for any suggestions and help.
Upon removal of the control board there is a blown area where there used to be a ceramic capacitor as part of the a/c to d/c bridge rectifier as shown below:
https://drive.google.com/file/d/1pqPHS9IiFLdxxlQQ1EC7C6CX6p_Ue8Yz/view?usp=sharing
The diode that connected to the blown ceramic capacitor was removed and upon removal the pad on the pcb for the diode came off. This pad area was likely already damaged causing an intermittent open circuit (see picture below):
https://drive.google.com/file/d/1rWMlrwLfhbJNxhbfClCU2yKun9rqh1ox/view?usp=sharing
Repair options I am contemplating are:
1. replace all items in the yellow box shown in the picture below:
https://drive.google.com/file/d/1fLfoaEdpz2zbsLk1dPEMG9bOA6gJ9Hjx/view?usp=sharing
2. replace the entire bridge circuit with a ready made one like this:
https://drive.google.com/file/d/1Is9QOZB8vmVIki7rdYBs04mxY-FFsYnz/view?usp=sharing
In case of option 1 suggestions on how to repair the damaged pad area and blown capacitor will be helpful.
In case of option 2 how can I connect the external bridge rectifier to the oven's control pcb (see the picture below), and what components have to be removed and what components remain to make the circuit function as was originally designed?
https://drive.google.com/file/d/1y4LFVXfZHLgJVGskIioYzmfbErOPy2Wu/view?usp=sharing
I am in the process of creating a drawing so that I can see what connects to what on the oven's pcb control board so that if repairing the current board I can solder the components correctly where the pads have been damaged. Any help or suggestion in this regard will be helpful. Once I have completed the drawing I will post a picture of it here.
Thank you for any suggestions and help.