Waeco CF50 temperature selection problem

Hi Frank, many thanks for the suggestions, unfortunately its a totally different design, there's no digital display and no ribbon cables

Yeah, just thought there might be some cable connections you could wiggle.

Good luck

it was a good thought, I did lots of wiggling :0)
I also cleaned what I could with electronic contact cleaner

Thanks Michael, I had a similar thought and took the cover & membrane off so I could work the switch directly.

It didn't make much difference. Having the cover off did allow me to move the switch slightly sideways when pressing it but it was just as inconsistent as with the cover in place

Mine would scroll through the temperature setting as it stayed slightly jammed down. Could be just a faulty switch on yours. Easy to replace if you are handy with a soldering iron?

You can get those switches at Jaycar

Also available in circuit boards of old VHS players and F&P washers. Most are almost unused and so if used out of an old Samrt drive washer of VHS unit it will do the job. Sharp soldering tip required though.

Ooops
Have the exact same fridge and my solve for the same problem ( scrolling through lights ) was to remove the cover as you have done, tear membrane off, then remove all pins under it, replace membrane, then replace cover but not the two screws that hold it down.To alter temperature, I lift the lid, remove the cover, adjust temp (using buttons directly) then replace cover and lid.
Mine started this problem in 2006 when only 6/8 months old while on trip to Cape York, it has since had a good look at a very large portion of Australia and never missed a beat.
Murray

MickeyJ & RMD
Those are both top tips and just what I was hoping for, many thanks indeed

Especially good news as I discovered only last night that Jaycar are now shipping to international destinations

I can handle the soldering, I'm just not sure what to order. Any idea of the correct part number on the Jaycar site? Even if I saw it I wouldn't know if it was the correct one.

The only thing better would be if some one said they'd done the same transplant and that the patient had made a full recovery :0)

GG7777
I'm not sure what you mean by "then remove all pins under it"
i.e I'm not sure what pins you're referring to. Its the plural that's tripping me up.

Under the membrane there's a single plunger (pin?) that operates temp selection by pressing on a single switch

With the cover and plunger removed and pressing directly on the switch I get exactly the same issue as I do with the cover on

The temp changes by repeatedly pressing the switch circled in red.
each press raises the temp until you get all the bars lit, another press starts it back at one bar lit. So just one plunger / pin for that function

All the other functions are working as they should

Allan,
another couple of top tips, many thanks

I would never have considered the membrane as a possible cause, or the battle field fix, so that's some thing new I've learned which is always a good thing

The switch is problematic even with the cover off and pressed directly. I experience exactly the same problem whether its covered or exposed, so I don't think messing with it is going to improve it any.

As it happens the membrane has a tiny split over the opposite end of the pcb so I'll replace it

I think I've located the correct switch, I'll post the info above with the earlier posts

Thanks Mark

Which Jaycar unit would you recommend?

sorry I couldn't tell you any more than they called it a "Weather Station" with an internal and external (the remote sensor) temperature display on the display, about the size of two matchboxes
I also use it for monitoring the temperature when I'm making y Home Brew in an outside shed

Thanks Malcom, I've seen them.

Where ever its viable I always prefer to go for a home repair rather a complete assembly. My bit towards looking after the planet.

Of course its not always worth it and there have been the odd time or two when the home fix cost more than an entire replacement but I choose not to focus on those :o)

As the part is $1 I'm going to give it a go

I put one of these on my fridge. Around $20 Mark from eBay. Just search for digital temperature controller. Wire it in to the power cord of the fridge. The supplied sensor sits on the ridge between the fridge and crisper section. Set the fridge emergency switch so the fridge bypasses the controls and runs all the time.
Fit the controller in a little box on the lid of your fridge or mount it anywhere really.
Very easy to fit and then you can just dial in the temp you want. I also have an Engel that I have fitted it to.

You can return your fridge to normal just by unplugging it.

Grizzle thanks for the instructions and photos, very helpful