Wei-Ya M3129D01-7 Clicking only at standard res

[mourix]

Got this Atomiswave cab with the famous Wei-Ya M3129D click of death. I did a complete recap/reflow based on this sheet I made. The images on there are my board too.

After the recap it still had the relay clicking, but I did notice it does work on medium and high res modes which I hadn't checked before the recap. Only 15kHz sources make it click.

On 31K, B+ is a steady 140V. On 15K, the relay seems to shutoff at about 35V on the multimeter.

At this point I have diode checked all parts on the daughterboard and replaced the relay on it. I also tried to lower the 15k B+ to no avail. Also went over all my soldering.

Can anyone guide me from here?

 

[mourix]

Update.. been testing pretty much the whole circuit relating B+. Even got myself a decent LCR meter to check all the film caps. No defects so far.

Now I found that the 15k B+ pot is actually 95% maxed out. That can't be right, right?

Maybe someone has been here before me.. I did mark it before I started twisting it.

 

[mourix]

Well, I tried the mid low to high range on the 15k pot, and it did not stop the relay shutdown situation. At least 31k still works do I did not make things worse yet..

 

[mourix]

Eventually Grant was a great help in getting it going, see here.

 

[BuddyC]

Excellent work!