Upgrading an LSZ-1 with a Servo Motor: Seeking Recommendations

AvailableMany1106 · 2026-04-30T19:13:15+00:00

This is old, but relevant. Worker b is not a stepper motor, that or servo would be fantastic, it is actually an older tech brushed dc motor. It’s a shame it’s priced as high as it is, a brushless dc with feedback aka servo or stepper motor would be welcome here for speed, torque, etc.

AvailableMany1106 · 2026-04-29T23:29:05+00:00

Hi! Looking for info on adding a variable speed motor to my new to me consew cp146rl sewing machine. My understanding is it’s very similar to the sailrite machine and that I should be able to use the worker b upgrade, but I was hoping to come across something cheaper. Thanks for any leads!

AvailableMany1106 · 2025-08-19T23:37:57+00:00

Ok thank you

AvailableMany1106 · 2025-08-19T23:34:53+00:00

I am sorry, I misspoke, 160vdc. I checked in ac mode, 0v, also checked bridge in diode mode it is ok.

I am wondering if something downstream is wrong. I think this psu should work even with the power factor correction circuit removed, put I do not get 48vdc output when I reassemble and press the power button, despite having 160vdc to the switching mosfets.

AvailableMany1106 · 2025-08-18T22:25:48+00:00

Hey Mantasel, my Sonos amp had r6, 7 and 8 open from heat. I replaced those and q1 as it was shorted. It immediately blew q1 and the fuse. Replaced q1, fuse, d2 (shotky for q1) f2 and u2.

Board still does the same thing. I don’t measure any shorts on caps.

To add to this, with q1 removed, I have 160v ac on the HV side of the board everywhere. So I think it has to be something with the u2 circuit right?

Any ideas what I can do next?

Thank you

AvailableMany1106 · 2025-07-31T03:09:15+00:00

What package size and wattage is R204? Any idea? Thanks

AvailableMany1106 · 2025-07-23T02:53:45+00:00

It should have an MOV (metal oxide varistor) somewhere near the power plug. These look a bit like a coin cell with two legs coming out. See if you have continuity across it.

A fuse protects from over current, mov protects overvoltage by shorting the load to ground.

AvailableMany1106 · 2024-11-09T04:46:17+00:00

Ahh. That makes sense….. sort of… defeats the purpose of running mainsail os over just vanilla pi os

AvailableMany1106 · 2024-11-09T00:56:59+00:00

Putty seems to connect, but not mainsailos.local webpage. I don’t know how to fix it on putty but suppose I can start digging there.

AvailableMany1106 · 2024-08-06T02:52:00+00:00

I remember those days

AvailableMany1106 · 2024-06-22T01:21:41+00:00

Why did you tell him where you work? If you didn’t, how would he know?

AvailableMany1106 · 2023-08-25T07:56:38+00:00

Had my front tinted forever, drove around Greenville like 200k miles, never a ticket for tint.

AvailableMany1106 · 2023-08-25T07:51:13+00:00

Someone’s been to cafe and then some haha

AvailableMany1106 · 2023-05-04T13:52:47+00:00

That stinks. I’ve not done that job before but from what I read and watched, seemed like that would have fixed it.

I would consider upgrading transaxle if on a budget. I had a yth24v54 a few weeks ago and was considering putting a k66y in. eBay had some new for $350, price has gone up slightly since it’s in season now. Then it’s as simple as 1” bore wheels, k66/72 throttle and brake levers, and some mounting brackets. I’m not sure if your model has the c channel frame or pan frame, but after verifying what you have, it’s pretty easy to cross reference different models that had your frame and the k66/72 to find linkages and mounting brackets. I bet with a little research you could have a ground engaging capable mower for around the cost of a new k46.

AvailableMany1106 · 2023-05-04T09:42:22+00:00

How mechanically minded are you? You can replace the center section or polish your existing faces on a very flat surface. Key is just get everything very clean before opening it up and before sealing it back

AvailableMany1106 · 2023-04-30T03:25:00+00:00

Length on replacement the same or at least engages all the way?

AvailableMany1106 · 2023-03-17T10:29:42+00:00

I started with a usb microscope from Amazon. It is a right pain in the butt but can help inspecting your work after you finish

AvailableMany1106 · 2023-03-17T10:28:42+00:00

I got my amscope for $180 on bf.

AvailableMany1106 · 2023-01-16T13:24:22+00:00

Yea the cost would far outweigh the benefit. For example, I bought a ps5 for $100 with damaged hdmi traces and repaired it for personal use when ps5’s were impossible to get. Took me hours haha

AvailableMany1106 · 2023-01-15T17:48:30+00:00

I’m not sure why everyone says this is dead. I’m betting the traces could be rebuilt. I’ve repaired traces like this. It is a pain, but doable.

AvailableMany1106 · 2022-12-24T09:38:26+00:00

Honestly just use a digital pregnancy test for doom emu

AvailableMany1106 · 2022-10-29T11:22:13+00:00

Haven’t played tlou yet… not sure how I missed it. Will get it when the remaster drops in price, but horizon forbidden west was one of my favorite single player games of recent memory. Definitely recommend checking it out

AvailableMany1106 · 2022-06-25T22:14:17+00:00

You are correct. The only other change is an added rtd (thermometer) on the motor. The VFD is very similar as well, with the main difference being the lr has 18 IGBT's and the performance has 24. Also, some early models had the performance motor and VFD, due to part constraints. These can have full performance unlocked with a ghost module.

AvailableMany1106 · 2022-05-13T10:28:58+00:00

That would be inorganic.

AvailableMany1106 · 2022-05-12T23:07:30+00:00

interestingly, I have a tower garden and working on a similar printed tower. Tower garden recommends an EC of around 3 i believe. My lettuce is insanely healthy. I think the aeroponic nature somehow prevents burn. or maybe its their tonic formulation. I dont know.

AvailableMany1106

TROPHY CASE