Recent content by Danzik

Yes, I have had the zener removed previously and there was -150 on the resistor end, hopefully when that new zener comes in all will be good

I have replaced it since the JB-150 went down as the original one was bad, I have a pack of 10 of then and replaced it again before this post, same results, I ordered a different zener so I will try that next thanks for your help on this Shockwave, we'll see what happens when I get the other one

Shouldn't that zener work though, as long as they gave me right ones, I can't hardly read the print on them even with a magnifying glass

That's a good deal, however I just wired mine up for 6LB6 tubes, less power maybe but cheaper

The zener I have installed was a 1N4753A perhaps this is not the right one ???? It was listed as a 1w 36v zener

That is a brand new zener Shockwave that I installed right before the photo was taken and I haven't had a tube in the unit since I have been repairing it ‍♂️

here is the ground terminal on the rail and I get nothing on it

Here at the pointer in this location I only have -5 vdc at the anode of the zener, the zener is a new 1w 36v zener, is this correct or is the value of the large resistor wrong ? I think this is where the issue lies but why ? I get 23k ohms on that resistor with multimeter

Ok, I am going to try to break it down here and make it easier to understand what I have going on maybe, I disconnected the wire leads and those two resistors coming off the ground terminal and the anode of the zener. I have a -147 vdc here at the pointer

Also, where is this 1w 10k resistor supposed to be that you speak of ???? I have not been going by the schematics since these boxes were made so many different ways I have just been going by what was already in it, I ran it a couple weeks before it went down and worked fine but I know that relay...

I have also previously unsoldered the brown wires from the rail there to make sure there were not shorts farther down the circuit, but from my previous testing I believe they did not have the relay wired correctly from when it use to be a recieve booster probably like you mentioned because...

New but I had the incorrect value of large 2w resistor under the rail there and I changed it to a 22k

old

Thank you very much for your reply Shockwave, yeah the unit had ruined the tube completely so I am working on it now without a tube installed, weird thing is that I tried replacing the resistor, diode, zener diode without a change, I do know when it was on its way out I had -24 at pin5 on the...

As a starting point I guess, does anyone know what I should have on this blue wire coming from the transformer? I am starting to wonder if the transformer doesn't have issues or somthing, since there were so many versions of the JB 150 it makes it hard with the schematics. Thanks