Hafler DH-200 switch

[johnhoef]

I know this is an old thread, but thought I would add my two cents for anyone that is looking into this power switch issue. The original switch in the DH-200 is simply an on-off switch. It is NOT a SPDT!!! (SPDT = single pole double throw) Terminal #3 on the origial switch is for energizing the built in light. Jake, the first switch you used was a SPDT switch, and of course, in one direction you will turn on the amp. In the other position you are shorting the AC mains, blowing the fuse!!!! So any of you that plan on replacing that switch, either use as is recommended in this forum, or modify wiring accordingly.

 

[rsavas]

I recently changed the AC switch in my DH-200, I used Mouser 103-7047-EV, all three terminals were used as #3 is used for the pilot "ON" lamp
Watch out, the terminals are not in the same positions as the original switch. #1 & #2 are reversed.
I also had to extend the AC line wire, by moving the strain relief

 

[johnhoef]

rsavas, Thank you for adding the reversal of terminals 1 and 2. I forgot to mention that. Initially, I installed the new switch without regard to that. No damage occurred, but the pilot lights did not behave properly. That's when I realized the reversal.