Failing resistance check - 2013 kit from storage [resolved]

[barbz]

Hi all,

Ive completed a build for a 2013 kit that was sitting in storage at a friends - its a 240v transformer not that it should make any difference at this stage.

Gut tells me something is up with the grounding but I cant track it down and Ive reflowed and redone some sketchy joints.


3 measures 000.3ohm
6 measures 000.3ohm
13 8.0Mohm but its up and its down
14 measures 000.3ohm
20 measures 000.3ohm
22 14.4ohm
top plate (to ground/12) measures 000.3ohm

Looking for any and all help that I can.

 

[Paul Birkeland]

0.3 is plenty close to 0.  If you touch your meter probes together, you'll probably see about 0.3 ohms.

Terminal 22 is telling you that your power transformer screws need to be tightened.

Terminal 13 is measuring correctly.

Terminal 6 would be a major concern, but I don't see anything in your photos that would cause that issue to happen.  I would double check that one.  Definitely don't power the amp on though if it still comes up as 0 ohms.

 

[barbz]

Thankyou

I'll torque down the transformer bolts and remeasure.

Re the 000.3 ohm I just wanted to make sure as the book says if it's not 0 don't proceed, with the dmm set to measure k it's 0 but auto mode goes down to the nth degree.

The measurements for point 6 in my post should have been for point 8 sorry. Point 6/7/9/10 are all good.

Thankyou

 

[Paul Birkeland]

It looks like other than tightening some hardware, your resistances are OK. 

 

[barbz]

Thankyou - that has done the job.

I'll move onto the next round of tests shortly.