Resistance checks issues - first time build

Motordiesel

New member
Good evening,
I’m new to building amps and just completed my first Bottlehead Crack OTL. I got to the resistance checks a week ago and on some if the terminals with asterisks I got OL on my Klein MM600. Being that they were not 0 as stated they shouldn't be in the manual, I thought this was ok. when I fired up my amp to do the the voltage checks, the fuse blew. I traced back thru my connections and found the 2-3/4" red wire between the middle terminal on the lower deck of the volume pot and A7 had melted onto A9 right through the casing on the wire. this is what I assume caused the fuse to blow. what did you guys get for ohm ranges for the terminals with asterisks beside them? :
1
2
4
5
13
 
Can you post some build photos? I wouldn't expect the problem you found to blow the fuse.

The Klein meter is about the worst meter you can get for the most amount of money. You'll get better results with this meter.

1, 2, 4, 5, and 13 need to read a high resistance, so several hundred thousand ohms, or OL on your meter.

A fuse that blows immediately typically means you have a diode or a cap in backwards.
 
Can you post some build photos? I wouldn't expect the problem you found to blow the fuse.

The Klein meter is about the worst meter you can get for the most amount of money. You'll get better results with this meter.

1, 2, 4, 5, and 13 need to read a high resistance, so several hundred thousand ohms, or OL on your meter.

A fuse that blows immediately typically means you have a diode or a cap in backwards.
Man, that’s good to know about the meter. The Klein was incredibly expensive from Home Depot and doesn’t really seem to work good in this use. Here’s some pics of my build:
 

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I’ve got those two caps by the power supply angled towards the cabinet right now to facilitate connecting the negative clip of the meter to the 12 terminal. Had to bend those so many times to retest I’m afraid of breaking the leads off those caps. I’ll need to apply some fresh solder from all the movement to those when I’m getting good resistance readings.
 
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