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 Post subject: Sencore PR57 Powerite
PostPosted: Jan Wed 11, 2017 4:16 pm 
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Joined: Jan Wed 11, 2017 4:07 pm
Posts: 2
I have a sencore pr57 powerite and the led's on the display meter do not work? The unit powers up and the variac :( section works good. The schematic shows only CR201-CR204 Part 20G18 but that it? Has anyone run into this problem?


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 Post subject: Re: Sencore PR57 Powerite
PostPosted: Jan Thu 12, 2017 2:55 am 
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Joined: Mar Tue 29, 2016 10:16 pm
Posts: 15
Location: Denver, CO
I've got several PR57s. Had a few of the leds burned out. I've just replaced them with no problems.
Alan


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 Post subject: Re: Sencore PR57 Powerite
PostPosted: Jan Thu 12, 2017 2:16 pm 
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Joined: Jan Wed 11, 2017 4:07 pm
Posts: 2
I checked the foil side of the pc board and found burnt spot where the AC switch was and a break in foil next to the switch? I don't know what caused it to burn out 4 leds but maybe 1 switch got stuck while the other was pressed in? I repaired the foil, cleaned up the board and going to change the leds but do you know if the switches can be cleaned with Deoxit :D or other contact cleaners?


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