Possible to repair washer control board?

Testdepth

Joined Dec 6, 2016
12
I have a 2yr old (1yr warranty) LG washing machine mdl WT1201CV with what I suspect is a bad control board. Control board is EBR76262101 and it is encased in some sort of silicone compound. I believe the relay for the drain pump is bad and want to replace it. Is there anyway to get to it without destroying the board in the process? I would say the coating is 1/8 to 3/8 thick clear rubber feeling coating.

Joined Jul 18, 2013
23,385
I don't see a relay, but usually that coating can be sliced and peeled off.
Max.

Testdepth

Joined Dec 6, 2016
12
That picture was to show the coating. Here is the board with relays. I thought about cutting through the bottom to possibly desolder the relay.
A new board is over $200. I suspect the drain pump relay is bad. MaxHeadRoom Joined Jul 18, 2013 23,385 You just need to access the pins of the relay to remove, so should only be a small area. Max. wayneh Joined Sep 9, 2010 17,153 Have you checked that fuse (lower left)? I'm wondering how you know the relay has failed. Thread Starter Testdepth Joined Dec 6, 2016 12 Fuse is for the noise filter and power. The washer is completely functional except for not draining water. I installed a new pump and it didn't fix it. That leaves the control board and the relay on the board. MaxHeadRoom Joined Jul 18, 2013 23,385 If you can access the relay connections while it is running, you could trouble shoot with voltage reading. Although I have used this method on a stove relay, this looks a little trickier to trouble shoot live. Max. Thread Starter Testdepth Joined Dec 6, 2016 12 Not into doing the 60 cycle shuffle! MaxHeadRoom Joined Jul 18, 2013 23,385 Those relays can be had really cheap, so not much lost if it is not the problem. Probably 24vdc coil. Max. Dodgydave Joined Jun 22, 2012 10,040 You could trace the pump feed back to the relay contacts, and see if there is AC power on them, or see if there is a coil voltage applied, that will determine which is at fault. MaxHeadRoom Joined Jul 18, 2013 23,385 You could trace the pump feed back to the relay contacts, and see if there is AC power on them, or see if there is a coil voltage applied, that will determine which is at fault. See #7 & #8 ! Thread Starter Testdepth Joined Dec 6, 2016 12 They are through mount so I should be able to desolder the pins on each relay and replace them for less than$8.

Joined Jul 18, 2013
23,385
Very much doubt SMT.
Are you sure they are 12vdc and not 24v?
Max.

Testdepth

Joined Dec 6, 2016
12
Anyone know where I can buy these relays or their equivalent?
HF33F/012 -HSL 3

Joined Jul 18, 2013
23,385
There appears to be many sources, ebay etc, if you locate the SPDT version, you can just cut the N.C. pin off, to make it SPST.
Max.

Testdepth

Joined Dec 6, 2016
12
Most of the Ebay is China and I may have to go that way if I can't source them in the US.

It is possible to cut through and remove enough coating to then use a soldering iron and a solder sucker to get the faulty relays out.

SLK001

Joined Nov 29, 2011
1,548
It is possible to cut through and remove enough coating to then use a soldering iron and a solder sucker to get the faulty relays out.
Sometimes you can use a soldering iron as a hot knife and plow furrows thru the coating, then grab the chunks with needle-nose pliers.