Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: bluelair on March 14, 2024, 06:38:06 AM

Title: Crack/Speedball no longer making sound after move.
Post by: bluelair on March 14, 2024, 06:38:06 AM

I recently moved the amp from my office to my home. It was working perfectly, all voltages within spec.
Now, when turned one, both tubes glow, and I know the signal is good, but I'm getting I get zero output,, no hum, no crackle, nothing. 

I cannot find any visible damage like any loose or broken connections, or shorted connections.  Power cord is good, no fraying or damage to the wires either.  I've checked all wires and they appear still be soldered intact.

Voltages readings are nearly all zero, except for 2:

1 through 13:  All zero.

14 - 0
15 232v DC
20 0
21 232v DC

This is with the black meter probe clipped to Pin 16 on the crack.

Title: Re: Crack/Speedball no longer making sound after move.
Post by: Paul Birkeland on March 14, 2024, 02:32:13 PM

Quote from: bluelair on March 14, 2024, 06:38:06 AM

1 through 13:  All zero.
15 232v DC

13 and 15 connect with a 270 ohm 5W resistor.  Yours is very likely not well connected.

Title: Re: Crack/Speedball no longer making sound after move.
Post by: Doc B. on March 14, 2024, 03:12:38 PM

Did you reflow your solder joints?