No Power

juan.huaman11 · 1692

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Offline juan.huaman11

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on: May 18, 2016, 09:51:14 AM
Hi Everyone,

Just got the crack and finished building it, but I seem to be getting no power at all.

After I finish the build, I check the resistance of all the pins mentioned, which all match.
So I moved forward and plugged in the power, but nothing happened; no glowing and my multimeter show no voltage. Took a look at the fuse and it was blown, and now is replaced. Once I again I plugged into power, and I get nothing. I went through the manual again to see is everything was connected corretly, and to my eye all is good.

Not sure what to now, is my crack dead or did I royally mess up.

Thanks for all the help in advance
« Last Edit: May 18, 2016, 09:52:49 AM by juan.huaman11 »


Offline Doc B.

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Reply #1 on: May 18, 2016, 09:55:08 AM
Did the second fuse blow?

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline juan.huaman11

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Reply #2 on: May 18, 2016, 09:59:14 AM
Quote from: Doc B. on May 18, 2016, 09:55:08 AM
Did the second fuse blow?

No, the second fuse is good and is currently installed.


Offline Doc B.

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Reply #3 on: May 18, 2016, 11:02:48 AM
Double check that fuse was installed properly, power cord plug was in securely, switch was on. If all those are OK, switch the amp off, unplug the amp from the wall outlet, turn it over, plug it back in and turn on the power switch. Carefully measure the AC voltage across power transformer terminals 4 and 5. This should read around 6.3V AC.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline juan.huaman11

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Reply #4 on: May 18, 2016, 11:29:23 AM
Quote from: Doc B. on May 18, 2016, 11:02:48 AM
Double check that fuse was installed properly, power cord plug was in securely, switch was on. If all those are OK, switch the amp off, unplug the amp from the wall outlet, turn it over, plug it back in and turn on the power switch. Carefully measure the AC voltage across power transformer terminals 4 and 5. This should read around 6.3V AC.

Double check everything, Fused installed properly as well as the power plug. Measure terminal 4 and5 and as mentioned on my first post; I still get no voltage.  :'(


Offline Doc B.

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Reply #5 on: May 18, 2016, 12:08:51 PM
With the amp plugged in and the power switch on, carefully check for line voltage across power transformer terminals 1 and 2. This should be roughly 120VAC or 240VAC depending upon which version of the kit you have.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline juan.huaman11

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Reply #6 on: May 18, 2016, 02:26:24 PM
Quote from: Doc B. on May 18, 2016, 12:08:51 PM
With the amp plugged in and the power switch on, carefully check for line voltage across power transformer terminals 1 and 2. This should be roughly 120VAC or 240VAC depending upon which version of the kit you have.

Now I'm getting somewhere! I'm getting the 120 VAC on terminals 1 and 2, but still not sure where to go from there.


Offline Paul Birkeland

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Reply #7 on: May 19, 2016, 07:08:37 AM
Next you'll want to measure the AC voltages between the other pairs of terminals on the transformer.  (Also, your power transformer looks to not be mounted properly, I would recommend revisiting the manual and correcting any errors)

When you turn the power on, do the tubes glow?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

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