Maker Pro
Maker Pro

Schmacher battery charger 200amp diode problem

This battery charger has 8 button diodes connected to an aluminum plate . 3 are not connected to the plate . I tried soldering them with NO luck. I was wondering if I could use electric compound . Or just get a new diode rectifier plate . As you can tell I'm clueless,but willing to learn. I do have 2 other battery chargers but this is the one id like to use as it is 200ampsand not an automatic charger.
 
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