MemberAugust 25, 2016 at 3:38 pm
I think I may have a similar fat finger type problem that Marlpitlane suffered from but first some context.
I had a local company install a “reconditioned” Acorn 80 for my mum just over a year ago which has been mainly unused. A couple of weeks ago her carer tried to use it but it was dead so they called a service number which they found on a label on the stair lift. The “engineer” diagnosed the problem to be a faulty battery pack which he would be happy to replace for Â£275. Luckily they then called me for advice. Having been an electromechanical/electronic engineer most of my working life, I thanked the “engineer” and sent him on his way before heading to Google.
After some research I came across this helpful forum and discovered that if the batteries were totally flat the recharging circuitry wonâ€™t initialise when the power supply is turned on â€“ what a wonderful design!
I used my motorcycle trickle charger to get some life back into the batteries before re-installing them and am now waiting for them to fully charge before resetting the datum.
While waiting I have noticed a couple of things.
The Hinge Zone switch and red LED is on. Is it supposed to be on in normal working conditions or could I have knocked the switch while removing the batteries?
The 33V 1.5A power supply seems to be a replacement. Although it supplies 33V under no load, when the batteries are in fast charge mode it seems to fluctuate between 14V and 20V. This doesnâ€™t seem right and may point to a failing power supply.
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