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LDT7797ST burned connection between PCB and circulation motor

MikeMc

Member
Joined
May 6, 2020
Messages
1
Location
Houston, Tx
Model Number
LDT7797ST
Brand
LG
Age
1-5 years
Hello,

I'm not experienced with appliance repair, but I've see great advice on here so thought it worth a shot. My dishwasher displayed an LE error. I tried restarting it twice and noticed it made some odd noises followed by a burning smell. I google searched the issue and found it was either an electrical issue, the motor or the PCB.

Times being what they are, I figured I'd at least attempt to fix it instead of buying a new dishwasher. I began taking it apart and discovered a burned out connection on the circulation motor (or sump assembly? I'm not actually sure what the difference is).

I've attached a couple pictures and apologize for poor quality. From what I can tell, there appears to be nothing wrong visually with the PCB. The electrical wiring in the door panel also appears fine. I'm considering buying a new circulation motor and replacing that but struggling with ensuring I'm ordering the right part.

This is what I'm assuming I need:

I also can't decide if the repair is worth attempting at this price or if I'm better off just getting a new dishwasher. I also will need to replace the connector and have not been able to find it online. Any help or advice is greatly appreciated.
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
114,665
Location
McMullen Valley, Arizona
Yes, that would be the part you would need.

Plus you would need a new wire harness that connects to the motor, as that one is burnt and can't be used.

Here's the motor wire harness:

Price new dishwashers, I've seen some new ones as low as $349:

Jake
 
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