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Hi Ashan,
The machine is working fine now, replaced the KID with ULN 2004, but in the end it was a broken track after all of that 8-O.
before I logged this chat , I did actually test the circuit with DVM and it checked out ok.
So after replacing the KID, the motor still only turned only in the...
Hi Ashan,
Apologies for the delayed response. It's been so busy I could only get round to testing out all your suggestions last night.
So what I found was that the KID65004 is the faulty component. I tested all the resistors and caps in question and they all checked out.
So I use a logic probe...
Hi There,
Thanks for the info.
I'll have a look at the board again, the part that looked a lot like a dot is actually an engraving with (C) for copyright...
I could not find the dot or a slot on the side of the chip to indicate pin 1, so I used the next best thing, which is the direction of...
Hi Ashan,
Thank you for the detailed response, i'll will certainly check our each of the points you highlighted points, and get back to you with what I have found.
Just as an extra note, I have started to draw the schematic on eagle cad, not finished yet but I think I have got most of the...
Hi There,
For your questions, I tested the BCR12's with a DVM and 1 appeared faulty, I replaced both. however, I only see one OptoCoupler on the board which is a PC-17k1 (single coupler IC).
The rest of the circuit is operating as it should i.e. all the other machine functions are ok. Just...
Re: Difference between BT138 and BCR12PM Triac's
Hi There, Yeah i saw about the heat sink...Thanks for the reply..
Eventually used the BTA24, machine is working but no 100% .. The motor is only turning in one direction... .. Checked the motor (split phase ac) and cap..their fine.. something...
Hi There,
i'm busy fixing my washing machine and it has 2 triacs for driving the tub motor in different directions. The manufacturer has put BCR12PM triacs in for both directions. One of them has given the ghost...
My local supplier has given me a BT138, from what I can see in their specs, the...
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