tomb
Member of the Trade: Beezar.com
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Quote:
Replace both the BD139 and the Darlington transistors. Those are the only active parts in the entire circuit. As long as you have the correct resistors and diodes in their correct places, and the diodes are oriented correctly - the only things that can be messed up are the transistors.
Originally Posted by K5Doom /img/forum/go_quote.gif Grrr now I'm back to where I started. My relay is still not working... Now, the measurements I get since I replaced the zener: 2 points at DM1: 2.21V GND-RM1: 26.9V DM2-GND: 1.75V Looks like I'm still not getting 12V at the relay... I almost have any of the parts in stock at my place by now (I even have a spare relay), help me change the right thing! I really want to seal this up, and listen to my music through it soon! For the tubes part, they are now firing up fine since I replaced the bad one. |
Replace both the BD139 and the Darlington transistors. Those are the only active parts in the entire circuit. As long as you have the correct resistors and diodes in their correct places, and the diodes are oriented correctly - the only things that can be messed up are the transistors.