Cool trick for drilling out a washer

[Dave H]

He has sliced up the pcb ground bus in that video so may not have any ground loops with his two chassis connection points but I would have preferred to keep...

[DrGonz78]

When you purchase the schematic on that site they make you agree to not publish the entire content. Now pertinent snippets probably will go unnoticed. Then...

[vintagekiki]

Why information on a spoon?
If not too big a problem upload (share) the complete schematic.
Such is the old good forum practice.
Thanks...

[Sea Chief]

Aha.. so my wiggling the plug in the socket, might actually exacerbate stress on the solders? yup good idea as 1st go/ redo all the solders around the jack...

[Jon Snell]

If you take a look at the data sheets, the 5Z3 drops up to 58volts and the 83 a mere 17volts on load. The 5Z3 drops a few volts off load and the 83 drops...

[nickb]

I've never had any luck sharpening these. Could you tell me more about your technique?...

[g1]

If you were just using clip leads, it's easy to get the + and - reversed on the speaker. That would reverse the push to a pull....

[g1]

The voltage drop occurs when the rectifier tube is delivering current. So the voltages may seem correct when the unit is idling, but they will fall to incorrect...

[g1]

Idiots at ON Semi have flipped the pinout again!!! This is brand new, April 2021. They have a new 'Rev.4' datasheet on their website that mouser doesn't even...

[g1]

The higher power bulb you use, the more current is allowed at the device under test. So lower wattage bulb is safer.

Do you think all the parts...

[christarak]

I have the same B&K. I just replaced the 83 tube with a plugin SS replacement for an 83. I calibrated it afterwards, and it works like a charm. Never...

[tedmich]

I've held washers in vice grips to drill out but your way holds them flat, so thanks!

The Temo M35 step drills on ebay are my current favorite...

[galaxiex]

Nice trick!

Similar.....

I had some washers that were the correct size ID and OD, but too thick.

I used a spade...

[glebert]

Don't know if everyone but me already knew this, but I was struggling to do this and got a good tip and it works well, so thought I would share. I have been...

[TomCarlos]

Update - I bought a schematic from Music Parts dot com; and found some wiring errors and a bad LED in the footswitch.

I will reproduce portions...

[Jazz P Bass]

The 'clear stuff' is flux from when it was soldered.
Not a real issue.
D2A is the reason for the voltage drop from the battery to the circuit....

[Drummer4gc]

Good thought, probably makes sense to avoid sketchy testing connections when looking for an intermittent connection!

Lost the speaker cable and...

[Bigdrums]

OK well, please tell me if you can if it would be "safer" to use a lower wattage bulb say 25 watts or higher like 250 watts, instead of the 90 watt...

[almavague]

I'm relatively new to electronics and I'm trying to troubleshoot my Electro Harmonix Metal Muff. When the unit is on bypass, there's no sound. When it's...

[TomCarlos]

I am sure you probably checked this.... but....

The way you have the cable going from amp to speaker is suspicious. I have a speaker cable I...

[caesparza]

Hi Jon, thanks for the answer. You mean the SAG on the rectifier affects the test? Because voltages seem pretty solid and stable on the unit. I'm not an expert...