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Depends on what burned up. If just the sense resistors burned up then yes swapping that will fix your issue. But if the driver IC or PCB burned up then changing the resistor will not help anything....

Part 5:
https://youtu.be/H5DQSUnfKGg

project is not only still alive it has been done for a while. Just finally getting around to editing the video.
More to come.

Just verified the MIB JY6600SW project and schematic included in the zip file attached here opens fine in KiCad 4.0.4 stable. Guessing either your download got corrupted or there is a incompatibility...

jfong posted a link to the datasheet. Looks like a 4A 50V with 1/32 microstepping driver. Fact that it is in a QFN package tells me it is of newer tech than the old TB6600. My guess is a newer more...

Not sure that is a TB6600 driver have not seen a TB6600 in a BGA package before. Can you carefully clean of the heatsink compound from the top of the IC and post the part numbers marked on top?

Yep that is within a tenth of what I calculated and your correct that Vref is in the "safe zone" for the input. Another side note for the sense resistors there are 2 sets on every card. The 3 on the...

Yes there is a formula but need some more info off your board. On the other side there should be some large sense resistors. Need to know the values of these resistors (number code on them) and how...

Some minor updates to the wiring diagram had to run one main contractor off a switch on the other. If I tried to close both at the same time my transformer would brown out and they would chatter and...

Project is not dead yet.
Had some time while waiting on parts for another project so pulled out the stepper driver plate and worked on it some more.
I think I am going to go with a motion board...

Second card in this batch.
Marked MIB JY6600SW
Note I removed the heatsink before taking photos.
330290
330292
330294

The sort of good:
Dual 6N137s on both step and dir.
Vref circuit...

Just got done reversing the latest batch of Ebay TB6600 cards.
This one is marked BL-TB6600-V1.2 D412
Note in the photos the one without the heatsink I moved all the tall components to the back...

Semi final wiring diagram done and attached. Just placed the order for the parts I was missing. New Lathe motor mount and motor installed now.

Another update video here:
https://www.youtube.com/watch?v=jRLHzYihbGM

Got another junk motor (out of a snowbank no less) and rebuilt it with acceptable results. Has a slight whine at high speeds...

Some minor progress today got most of the wire strung in the house and the service disconnect output all buttoned up. Just 1 more hole, 1 board, 3 wire staples, and 7 screws till I am done :)

Part 3 playing with inductive proximity sensors as a pickup for the spindle RPM meter.
https://youtu.be/RHz4de7N4dY

The voltage/frequency curve is flat from 60 to 120Hz in my current setup. Would think for a given speed increase the work needed to spin the motor would go up with speed. (bearing / air drag) If that...

Feeling motivated tonight here is another video.
https://youtu.be/fEy6GD6PAZ0

Got all the remote IO wired up to test switches and ran the controller though it's paces. Also set up the...

Seems overpriced. Automation direct has similar motors for ~$50 less. More than likely will just try and find another used motor and rebuild it myself again. Save quite a bit that way and my hobby...

Decide to upgrade my 3 in 1 again. This time converting from single phase 3/4hp single speed to 3 phase 1hp variable speed via a VFD.

Video of the test run of my dumpster motor + VFD:...

All of the reading I have done on DC tubes have stated their run life is much shorter than a RF tube for engraving. Agree the cheap china tubes are the shortest of the bunch. But even on the US made...

1.) Check your mirrors and lenses. They by far are the most common thing to go bad and the cheapest to repair.

2.) If not that tube is the next thing up to look at. cgerber post is a great on...

The lenses and mirrors you want to look at are the "flying" one on the moving arms of the machine. Just take a flashlight and look at them. If there are spots and pitting they are bad. If they look...

Yea the RF tubes are great for longevity and are regularly re-gassed and put back in service. Downside is they are 10x the cost of a HVDC (exposed glass) tubes new. My setup came without the laser...

Is your laser air or water cooled? (since you said it was similar want to make sure it has a air cooled RF laser on it)

If so have you checked the fans / airflow?

Since the laser is working but...

Well finally have a set up update to share. Decided to go the Raspberry Pi route with PICnc hardware.

Decided to use their hardware and software stack and make a custom card optimized for laser...

Ok found the vendor and part number for that plug:
It's trade name is Jones Beau now owned by Molex.

Panel mount socket:
old # S-3302-AB Molex# 38330-0502
Panel mount plug:
old# P-3302-AB...

Thanks much that is what I needed. Seen those before so know what I need to search for. May never use it but want to plug up the hole in the frame.

Cgerber do you happen to have a photo or mfg + part number of the door interlock override switch ? It was removed on my machine and would like to find a replacement.

Thanks that was the bit of information I was missing. Will wire up one IO for the PWM signal and one for the enable. Going to optoiso both since if I had to bet the laser supply will be the first to...

Looking for information on how to hook up the laser power supply (doing logic design now) to linuxCNC for proper PWM control and found this link:
https://github.com/bjj/2x_laser
Lots of good...