living sounds
Well-known member
I've got a problem with my build. I've got +224V going into the STP10nk60ZFP, but only +95V going out. I couldn't find a fault with any of the surrounding parts. Bad MOSFET?
Yes, and the almost +24V can be measured at the cathode with bypass engaged. But the relay doesn't click and there is no continuity between the respective input and output pins...Looks to be almost identical to the Omron relay so it should work. Are D1 & D2 oriented correctly?
Low resistance from A- to GND is normal. R1 on PSU board sets that. I think it's like a filter/current limiterI am getting 125 ohm...
I've got more of those relays, and the ones not soldered in measure correctly (+/- 10% of 2880 ohm).
For some reason there is also a ca. 5 ohm resistance between the A- ground and the main PCB ground.
Both relays... but they are brand new and cannot have received an overvoltage...Low resistance from A- to GND is normal. R1 on PSU board sets that. I think it's like a filter/current limiter
The relay is probably busted...
With the relay removed, what is the resistance between the pads on the PCB?Both relays... but they are brand new and cannot have received an overvoltage...
If you have tubes in the sockets then that‘s the resistance of the cold heaters.There's 25 ohm between v+ and main PCB ground...![]()
That’s what it should be because we’re measuring the relay coils in parallel plus 100 + 100 ohms. So I don’t think the relays are faulty.Yes, with a tube removed it is >1600 ohm.
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