Hi Guys, does anybody have a manual or schematic for this unit?
There's nothing on the web for this.(at least that I can find🙁)
There's nothing on the web for this.(at least that I can find🙁)
Shematic of Waveforms 403B
I have one of these myself that was given to me a few months ago but it didn't work. It looked so good that I got interested in fixing it. So I went on looking for a schematic just like you. During my search I got into this posting. Since the posting originated so long ago, I told myself not to expect much from it. Then decided to bite the bullet, rolled up my sleeves and open the thing to find out that nothing seemed wrong, no evidence of any problem, or blown up. That gave me no choice but start reverse engineering it and draw a schematic. It is done by hand and not 100% complete (but at least 90% of it is there), for the most important part. I did not bother going further because I had fixed with about 60% of it done. Forgive me for the quality, but it was not done with the intent of publishing it, just as a personal challenge to fix it. Since I know you were looking for the same info, I decided to join this site to share it. So here it is and hope it helps.
I also have a very good understanding of it, so if you do have a particular problem, I may be able to give you some hints if you want to repair it. Good luck and don't forget to share your progress.
I have one of these myself that was given to me a few months ago but it didn't work. It looked so good that I got interested in fixing it. So I went on looking for a schematic just like you. During my search I got into this posting. Since the posting originated so long ago, I told myself not to expect much from it. Then decided to bite the bullet, rolled up my sleeves and open the thing to find out that nothing seemed wrong, no evidence of any problem, or blown up. That gave me no choice but start reverse engineering it and draw a schematic. It is done by hand and not 100% complete (but at least 90% of it is there), for the most important part. I did not bother going further because I had fixed with about 60% of it done. Forgive me for the quality, but it was not done with the intent of publishing it, just as a personal challenge to fix it. Since I know you were looking for the same info, I decided to join this site to share it. So here it is and hope it helps.
I also have a very good understanding of it, so if you do have a particular problem, I may be able to give you some hints if you want to repair it. Good luck and don't forget to share your progress.
