Help! Mistakes were made...Assembly of Crack Amp Kit [resolved]

[zaramon]

Do you have your meter set to AC volts?

Can you view the images hosted at the URL I defined in the previous post and tell met? I believe it is set correctly to Ohms, but admit I'm new at this particular endeavor. Let me know if you have trouble viewing the pics. It would be the last 4 most recent pics and I named the images appropriately to the PowerCordFlat#Terminal.

 

[Paul Birkeland]

Your neutral looks like it's coming through, but the 8 ohms on the hot side is likely an issue. 

I think once some years ago we had a situation where the little pressed in nub that went to the hot pin on the IEC power entry module wasn't making good contact with the metal bar that carries that connection up to where the fuse holder is.  Perhaps it's worth checking resistance to that pressed pin to see if that gives you a better reading.  If that is the issue, it's likely correctable on your end pretty easily. 

 

[Natural Sound]

I just looked at the manual for your meter. It is a bit unconventional in its operation but I think I can help.

The large selector when in the voltage position "V" defaults to the AC range. Pressing the "Sel" button will toggle the meter between AC and DC modes. The AC or DC icon on the digital display will indicate the mode you are in.

NOTE: NEVER MAKE RESISTANCE READINGS WITH THE AMPLIFIER PLUGGED IN
Resistive measurements are made by moving the selector to the continuity/resistance position. This is the one with the ohm symbol/speaker. Pressing the "Sel" button will toggle between ohms and Audible continuity. The meter defaults to Audible continuity so you must press the "Sel" button to enter the ohms mode. (I'm pretty sure this is where you were having problems.)

Take your time, review the instructions in the manual and make sure your meter is set up correctly. Your meter display will tell you which mode you are in. Refer to your meter's manual if necessary.

https://data.kleintools.com/sites/all/product_assets/documents/instructions/klein/MM420%20Instructions_web.pdf

 

[zaramon]

I just looked at the manual for your meter. It is a bit unconventional in its operation but I think I can help.

The large selector when in the voltage position "V" defaults to the AC range. Pressing the "Sel" button will toggle the meter between AC and DC modes. The AC or DC icon on the digital display will indicate the mode you are in.

NOTE: NEVER MAKE RESISTANCE READINGS WITH THE AMPLIFIER PLUGGED IN
Resistive measurements are made by moving the selector to the continuity/resistance position. This is the one with the ohm symbol/speaker. Pressing the "Sel" button will toggle between ohms and Audible continuity. The meter defaults to Audible continuity so you must press the "Sel" button to enter the ohms mode. (I'm pretty sure this is where you were having problems.)

Take your time, review the instructions in the manual and make sure your meter is set up correctly. Your meter display will tell you which mode you are in. Refer to your meter's manual if necessary.

Thank you for responding Natural Sound, In my previous (I think erroneous readings) I switched the "sel" switch over to "DC", but I could be wrong, but I don't think that was measuring the resistance in Ohms that I was instructed to do. Instead I switched the selector over to one selection past voltage to Ohms and  took those readings. I admit that there was no option to select "DC" that I could find. I'm continuing to provide as much information as possible and thank you for your assistance.

https://data.kleintools.com/sites/all/product_assets/documents/instructions/klein/MM420%20Instructions_web.pdf

 

[zaramon]

Your neutral looks like it's coming through, but the 8 ohms on the hot side is likely an issue. 

I think once some years ago we had a situation where the little pressed in nub that went to the hot pin on the IEC power entry module wasn't making good contact with the metal bar that carries that connection up to where the fuse holder is.  Perhaps it's worth checking resistance to that pressed pin to see if that gives you a better reading.  If that is the issue, it's likely correctable on your end pretty easily.

You sound exactly like myself telling someone new what to do, there are some things lost in translation with newer folk. Can you elaborate on precisely which little pressed in nub this could be in regards to and which one is the hot pin on the IEC power entry module? Many apologies as i need the low level instructions of how to make a peanut butter sandwich lol.

 

[Thermioniclife]

Sorry I tried to help with your low voltage reading. Will not make that mistake again.

 

[zaramon]

I hope I didn't come across the wrong way, text messages are hard to discern tone. Let me start over, I am humble and thankful for any of yours or other instruction. I am happy to try anything you ask because you and everyone else on here knows better than me. If I came across the wrong way, I'm really sorry, that wasn't my intention. If there is anything I can do to mend this relationship, I'm all ears for you. I respect you and everyone else that is trying to help me and the very last thing I want to do insult you by any means. I hate this came across this way, I'm sorry I can't get my true feelings across in text messages. I'll work on that.

 

[zaramon]

Not that it matters, but to attempt to clarify what I meant was that I, myself sometimes can leave out small details when instructing others on a subject that I have years of experience dealing with unintentionally because my brain makes some assumptions. And I was genuinely asking if you could take a look at the pictures and tell me if it looked like my meter was on the wrong setting. That was all I meant.

 

[zaramon]

Your neutral looks like it's coming through, but the 8 ohms on the hot side is likely an issue. 

I think once some years ago we had a situation where the little pressed in nub that went to the hot pin on the IEC power entry module wasn't making good contact with the metal bar that carries that connection up to where the fuse holder is.  Perhaps it's worth checking resistance to that pressed pin to see if that gives you a better reading.  If that is the issue, it's likely correctable on your end pretty easily.

Ok, I would like to explore this option. Can you describe the little pressed in nub a bit more so I can locate it?

 

[Paul Birkeland]

These.

 

[zaramon]

Ok, just to make sure I understand the procedure, I'm going to connect one lead to one of the flat prongs on the power cord and touch the other lead to the hot pin and take a resistance measurement and then switch this lead to the other cold pin and take a measurement. Then, repeat the process using the other flat prong on the power cord for a total of 4 measurements? Let me know if I've got anything wrong and I'll try to take some pictures of the results to share.

 

[Paul Birkeland]

What I would recommend is clipping one of your meter leads to the ground post on the IEC jack (the third terminal that wires to the chassis plate), then measure AC voltage between there and the N terminal, the little nib that goes to the L connection of the power cord, and the little nib that goes to the fuse holder. 

There may be some other measurements to take beyond that, but that's a good start.

 

[zaramon]

Ok, I added three pictures of measuring AC voltage with one lead on the ground post (E) and the other lead touching post (N) followed by the lead touching post (L). Lastly, the lead touching the little nib that goes to the fuse holder (which gave me a reading finally of around 117V). Does this provide some useful information?

 

[Paul Birkeland]

OK, this is getting close to the root of the problem.  Can you now repeat that measurement that gave you 117V but instead of the red probe to the nib, touch it to the bar that connects the incoming L to the fuse holder?

 

[zaramon]

Can you confirm if the bar that connects the incoming L to the fuse holder is labled as 1 or 2 in this picture or if it is located elsewhere?

 

[Paul Birkeland]

1

 

[zaramon]

That test gives me the same 118V reading.

 

[Paul Birkeland]

Now perform this same test with the probe clamped to G but measure the voltage where the black wire attaches to the IEC power entry module.

 

[zaramon]

Where is "G" located? I don't see that letter on my cheat sheet, is that short for "Ground" or something? Maybe if you could mark it on the picture it would be most helpful for me.

 

[Paul Birkeland]

Yes, the ground terminal, where one probe has remained clamped for all these tests.