Electronics > Repair

Weller WD1 Discussion and Repair

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nanofrog:
Pics can be had too, in the following thread: https://www.eevblog.com/forum/reviews/weller-wmd-3-repair/msg210603/#msg210603

Please note however, that the boards posted by myself and another member (Baliszoft) are different from one another, so there's at least 2 PCB revisions for that model. Specifically, it's the BTA12 that is one of the parts that has a slightly different location. So you may need to trace out your particular board.

Hope this helps.  :)

nanofrog:
Here's the schematics for the WD1...

dungad:
Hi nanofrog,
Thank you for the additional information, my WD1 unit is like Baliszoft's one.
Looks like I'm only missing the triac, will post my result once I get the new triac installed.

pinkman:
I recently acquired an WD1 station which works fine for a while, but ends with the degree (oF) indicator flashing and the iron OFF. 

Sometimes turning the unit off/on or performing a factory reset corrects this problem for a while, but it always comes back.  I have tried swapping in a brand new iron and it has the same symptom, so it appears that the problem is internal.

Has anyone encountered this problem?  I downloaded the schematics and I'll analyze them later.  I suppose it's time to start poking and prodding this little monster.

SLJ:
Not to sound obvious but did you check the settings for standby and auto-off time?

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