When I put it up to my ear, I can clearly hear it whispering "you are an idiot". 😁😁😁
To be fair on little old me though, it is half the size of what I was looking for. Id even had the IEC off the amp. I blame bad lighting in my workshop....
Just over 10 hours from posting problem to resolution, and only 5 diyaudio experts involved. I'd say that's a shining success. Time to hi-five everyone 🙌
If only all issues could be solved so swiftly and easily.
If only all issues could be solved so swiftly and easily.
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Let me add.... why did the fuse blow up? After all, fuses exist for a good reason... to contain an out of tolerance condition and prevent catastrophic failures.
Not done until you've done a Deep Dive and created an engineering report... Amp is grounded until then.
I got one of them amps... and I sure am interested on why....
Not done until you've done a Deep Dive and created an engineering report... Amp is grounded until then.
I got one of them amps... and I sure am interested on why....
My thoughts exactly. Looks like the soft start wasn't so soft after all, the fuse looks proper evaporated.
The soft start board appears to be the diyaudio store one:
https://diyaudiostore.com/products/soft-start-speaker-turn-on-delay-and-dc-protector-boards
There way this circuit works is as follows:
The resistor bank is wired in series with the transformer primary, limiting inrush current once the power switch closes the connection from the mains. With some delay, the relay shorts out the resistor bank, effectively hooking up mains directly to the transformer primary.
Maybe the relay failed closed? Should be easy enough to measure, if you know how to do it safely (hint: the power cord should not be plugged in for that measurement).
The soft start board appears to be the diyaudio store one:
https://diyaudiostore.com/products/soft-start-speaker-turn-on-delay-and-dc-protector-boards
There way this circuit works is as follows:
The resistor bank is wired in series with the transformer primary, limiting inrush current once the power switch closes the connection from the mains. With some delay, the relay shorts out the resistor bank, effectively hooking up mains directly to the transformer primary.
Maybe the relay failed closed? Should be easy enough to measure, if you know how to do it safely (hint: the power cord should not be plugged in for that measurement).
