Author Topic: Samsung DMT800RHS - control board power  (Read 1012 times)

Offline painedavid

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  • Member Since: Nov 2013
  • Posts: 2
Samsung DMT800RHS - control board power
« on: November 03, 2013, 10:10:06 AM »
Hi,

Regrettably, I bought this thing (DMT800RHS) two years ago and have replaced the control board three times (twice under warranty)    This time replacing the control board didn't fix it.  There are no lights or touch pad response at the control pad.  According the the trouble shooting "fast track" document posted on this site (thanks, that helps  a lot) the control board should see +5V across pins 1-6, and +12 V across pins 2-6.  I have confirmed that all six wires that go from the main PCB to the control board are good.  There is no +5V or +12 V on the main PCB where the wire harness that feeds the control board connect.  There is 120V AC coming onto the board.

Question:  Am I on the right track replacing the main PCB board which I assume has the circuitry to create 5 and 12 V?   

Thanks for any help, and yes, sign me up for a class action lawsuit against Samsung)!  (Kidding)


David

Offline afterblast

  • Technician
  • Member Since: Feb 2013
  • Posts: 91
  • Country: us
Re: Samsung DMT800RHS - control board power
« Reply #1 on: November 03, 2013, 11:34:41 AM »
I've worked on a couple samsung dishwashers...   and while I'm not sure if your model does or doesn't have one, most of the ones I've seen have a fuse on the neutral side, if it's blown it would cause the panel to appear dead, also I've seen several where the 120V connector coming into the board was damaged and not making good contact.  before replacing the board I'd make sure you have continuity from neutral on the board, to the neutral connection to the wall, and also take a good look at the connector on the board and make sure the pins are even and don't look out of place. If both of these check out and the board is still not sending power out to the control then at that point I'd probably replace it

good luck

Offline painedavid

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  • Member Since: Nov 2013
  • Posts: 2
Re: Samsung DMT800RHS - control board power
« Reply #2 on: November 03, 2013, 10:05:52 PM »
Thanks!  That is very helpful.  I'll take a look at those issues.

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