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I have a Whirlpool AWG726 Front loading washing machine which has developed a problem during it’s wash cycle.
All aspects of the wash cycle function as expected, however the drum does not turn. Water pumps in/out fine, and the timer cycles through it’s paces.
While inspecting the Motor’s Control Circuit Board I found a broken solder joint at the relay which I’ve since re-soldered. However I’ve yet to re-try the board as there is one question I hope someone might be able to help with.
The circuit Board in question is an Eaton Type A1 D23, part no 145300 (C) RV20 (as printed on component side of board), and 145301b / 145303d (as etched on reverse side).
As the board was out of the machine I thought I’d check a few components that were near the relay. The three I checked were the 5 watt resistors that are raised off the circuit board. I de-soldered one end of each resistor and checked their values, and they came back as follows…
Resistor R32 – marked value – 5K1 J03 – Tested Value – 5.1 K Ohm 😀
Resistor R58 – marked value – 8K2 5W10{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} – Tested Value – 8.2 K Ohm 😀
Resistor R31 – marked value – 051K02 – Tested Value – 0.5 Ohm ❓
My question is with Resistor R31 – Would the tested value of 0.5 Ohm be correct, as I’m not confident with decyphering the 051K02 code on the resistor.
All other parts of the circuit board seem visually fine, so I’m ‘hoping’ that the broken solder joint was the cause of the failure.
Any guidance regarding the resistor value will be happily accepted.
(I’ve been quoted ~ $230 Au from a local parts distributor for the entire board, but would much prefer to replace the suspect resistor, or retry it if the value is correct).
Many thanks.
Re: Whirlpool AWG726 Washing Machine – Motor Control Board f
The relay joint failure is a “gimme” over this side of the world. Most of us bridge it to the nearest contact on the edge connector with a length of single strand wire just to make sure. It’s very, very rare for there to be any other problem with the board. You won’t do any harm replacing the resistor; what might be more useful at this point is to check the carbon brushes on the drive motor – they are probably well worn by now and if too short can back load the electronics, causing the problem you have described.
Regards,
Penguin45.Re: Whirlpool AWG726 Washing Machine – Motor Control Board f
Many thanks for your prompt reply Pengiun45.
I’ve just inspected the motor brushes as suggested and they are in surprisingly good condition (20mm showing when removed from motor), so I’m glad I had a look as I won’t need to worry about those for a while.
Your suggestion of bridging the relay solder joint to the edge connector with a piece of wire brings a smile to my face as I thought to do that originally but then had second thoughts… I’ll do that later today.
Would you have any idea if the R31 resistor should read 0.5 Ohm, as the 051K02 code on the resistor has me baffled. That’s the only thing now stopping me from pluging the board back in and testing it out.
Thanks again.
Re: Whirlpool AWG726 Washing Machine – Motor Control Board f
Hi John,
Motor brushes sound good – couple of years left in them. Extensive research (well, I had a word with Andy2 😀 ) suggests that you should be ok. The labelling of the resistor doesn’t make any sense by the usual standards. We both think the thing to do is plug it in and run the last rinse and spin, see how it goes.Regards,
Penguin45.Re: Whirlpool AWG726 Washing Machine – Motor Control Board f
Thanks for your ‘research’ Penguin45.
It was those markings on the resistor and the fact that it’s tested value was so different to the other 2 that led me to question if it was right.
After reading your posts I’ll happily leave it alone and try it out as is. It’s 9pm here (Melbourne Aus.) and the kids are asleep, so I’ll replace the board in the morning and put the washing machine through a cycle to see what happens. I’ll let you know how it turns out.
(The solder joint at the Relay clearly showed a break (and electrical arcing), in fact the relay would have fallen off if there were’nt 3 other good solder joints holding it in place).
Thanks again.
John.
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