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Hi all,
Apologies for the long post….
I’m looking at a GW703 for my mother-in-law who probably over-loaded it to wash a rather large quilt.
The machine ceased working at some stage through the cycle with a small amount of water on the floor. I assume this was before the spin cycle as the tub was still full.Symptoms were no signs of life from the machine even though it was switched on at the wall.
Father-in-law decided to take a look and removed the motor controller and opened it to discover a blown main fuse. Not having any suitable replacements on hand he decided to short the fuse with a piece of wire.
Upon reassembly of machine and switching on at the power outlet, apparently there were several loud bangs from within the motor controller followed by a burning smell.
The local appliance repair man was then called, who promptly declined a visit after hearing this story, stating the machine was most likely not repairable.Since then I have removed and opened the motor controller to discover several burnt sections of circuit board with corresponding scorch marks on the inside of the plastic case. Needless to say it appears unrepairable.
After measuring the resistances of the main and pump motors and having a good visual inspection of both, I decided to purchase another motor controller.
I installed the new motor controller and switched the unit on but there was still no sign of life.
I then measured the two 15.5V outputs for the display and RPS.
The feed to the display was 15.79V but the RPS feed was only 10.86V.
When the RPS connector was disconnected the voltage rose to 15.78V.Since there were no lights on the display I decided to open the display module and investigate the cause.
I discovered the 5V regulator had failed and replaced it with another suitable regulator. The 5V supply was now working but still no signs of life.
I now assume whatever IC is in the display module has failed and the unit now requires a replacement display module.I’m also a little suspicious of the 15V feed to the RPS sitting at 10.86V.
Does anybody know if this is normal ?
As far as I’m aware I thought the RPS was just a set of three Hall Effect sensors, which in theory would draw minimal current.Before I spend more money on this machine to purchase a display module, and possibly a RPS, is there anything else I should check/look at ?
The resistances of the pump and main motors are spot on and visually don’t look burnt, nor do they appear to have been wet.Re: Dead F&P GW703
It’s either a dead short or a gross overload, if the board has gone bang. You might like to follow the blown tracks back to the edge connectors and consider what they are attached to as an indicator as to what component may be at fault.
Board level stuff we can’t really help you with – there is no tech info available.
Penguin45.
Re: Dead F&P GW703
Ok, perhaps there was a little too much info in my original post.
Can anybody confirm the 15.5V supply to the RPS is meant to actually be 15.5V when the RPS is plugged in ?
Mine is currently sitting at 10.86V when the RPS is plugged in and goes to 15.78V when it is unplugged.Re: Dead F&P GW703
Hi, I’m located in the NE suburbs of Melbourne, Aus, where are you ?
I have a friend who I’ve discovered has the same/similar machine.
They have agreed to let me check the RPS voltage this weekend.
Will post back with the results.Re: Dead F&P GW703
Hi JDD
see my post
F&P GW703 code 00110000Bought a GW712 – Definitely have a spare machine now, am in central NSW.
I cannot get any signals out of mine, so sorry can’t offer any values to guide you.
Cheers
Re: Dead F&P GW703
Ok, I’ve measured the RPS voltage of a working GW703 and it was 10.88V with the RPS plugged in, this went up to 15.80 when I unplugged it.
Seems this voltage on the dead one looks ok, so at this point it wouldn’t suggest the RPS needs replacing.
In light of this I’ll purchase a replacement display module and see how things go.Re: Dead F&P GW703
After purchasing and installing a used display module from EBay, the machine then came to life. I did notice the controller is for a MW series 3 not a GW, not sure what implications this has if any.
After I reset the display module, things appeared more hopeful although the machine exhibited some strange behaviour.
No matter what part of the cycle it was in, it would cycle it at intervals of a couple of seconds on, then a couple of seconds off continuously.
Eg, if it was filling, it would cycle the solenoid(s) on and off every few seconds, and the same for the pump if it was meant to be pumping.
I’ve read another couple of threads on here about similar behaviour with other machines but there were no solutions to this that I could find.
Perhaps this is the result of putting a MW series controller on a GW series machine, I don’t know. I thought the MW just had a few less features.
When put into diagnostic mode, the pump and solenoids operated normally.Anyway, as it turns out I salvaged a display module and motor controller from a GW601 before my neighbour threw it out.
I installed both these components after a small modification to the display module to make it fit and a piece of tape to activate the micro-switch. At last the machine now appears to function normally.After all this, does anybody know what functional differences are between a GW701 and GW703 as I guess it’s now turned into a GW701.
Also, does anybody know if a series 3 MW controller will operate normally in a GW703 machine?
I’m just wondering if either the motor controller or the display module, both of which were purchased second hand but supposedly good, might have a fault.
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