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Hello,
I was wondering if someone can advise me on the repair of a Howden HJA8362. Inspection of the broken dishwasher showed catastrophic failure of the controller PCB (T1 with a hole in it). I purchased a new Beko Control PCB (1899450750) from Whitegoods but the dishwasher is still non-functioning.
I have swapped the PCB with another dishwasher in the office building and PCB is ok.
I have checked the open circuit impedances of most of the components and to my knowledge they appear ok. I have checked the continuity of most of the wires and these seem ok. I have checked continuity of plug-pins to power button and control board and again these seem ok.
I am now at the end of my knowledge. I have visually check the display board and see no obvious signs of failure.
Are there any o/c tests I can carry out on the display board?
Does the catastrophic failure of T1 and associated failure of R25 point to any other component in the dishwasher?
If the display board is faulty and I have already plugged the control PCB in and tested it without failure of the control PCB is there any problem of swaping the display PCB out and testing it one of the other dishwashers in the office block?
(I am fortunate that there are three of this model in the building).
Many thanks MatthewRe: Howden HJA8362 – Control PCB repaired but still not work
The only things I can think would put a hole in the PCB would be motor, drain pump and heater with an outside chance of the soap dispenser. I wouldn’t have thought much else would, assuming the wiring wasn’t shorted somewhere of course.
T1 doesn’t mean much, what connector and pin number is it on?
K.
Re: Howden HJA8362 – Control PCB repaired but still not work
Many thanks I will check each of the items you mention again.
Where the edge connector fits, the PCB has three contacts, a slot, and then a further 6 contacts. T1 is connected thus, pin 1 to 3 (shorted to 2, heat sink to 4, pin 2 “cut”, pin 3 thru R25 to the ATMEL chip (pin5). The associated wires are blk (2) brown (3) yellow (4).
Black wire to power switch (live)
Brown wire to water reservoir
Yellow wire to motor
The motor continuity seemed fine but closer inspection suggests it may be a short – I’ll take the back off and investigate further.
Thank you again for the prompt response.
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