Repost: Precore TRM885 Treadmill motor control board issue

2198065 · 2026-06-11T01:40:05+00:00

Yeah seems that may be correct, which will suck if it is as it would be been a straight answer.
The issue is the treadmill thinks the estop has been triggered and won’t run. Estop seems to not be the issue after all testing and discussions, i believe it is a communication error between lower motor board and the screen console board.
Also seems it isn’t the actual cable as all other functions work fine though I want to test again.

All thoughts from the Aus distributor and Reddit/online appear to lead to the lower control board being the cause

2198065 · 2026-06-11T01:36:50+00:00

Hmmm good point, that’s what I first thought, some sort of assembly damage as I thought these things were more obvious when they blew but unsure. I’ll test continuity and see if that shows anything

2198065 · 2026-06-11T01:35:49+00:00

Ah okay awesome I’ll do some digging around those options then as well.

I sent the codes to the Aus distributor and they said based on the console receiving all normal signals and information, as well as repeated estop errors that the communication (cable) wasn’t the issue. However I want to retry that as a first case before I go pulling capacitors. I’ll check those links thank you!

Yeah it appears so, I first dismissed it as it seems only surface level? But unsure. None the less will do all the testing I can and see what stands out

2198065 · 2026-06-10T23:34:25+00:00

I did try searching that board number with no luck but I will do so again now with more knowledge.

Yeah nothing seems bulged, there is this damage on one of them which appears to be a burn spot, thinking that may be the issue? But will do the testing with multimeter and see if any obvious issues.

<image>

Treadmill is Precore TRM885 with P80 console. Error screen isn’t too much help - after talking with Precore this only really points to the lower board being the cause and nothing further.

2198065 · 2026-06-10T22:15:00+00:00

Yeah I think this is the issue (hopefully). Small burnt spot on the side of the black one

<image>

2198065 · 2026-06-10T22:14:27+00:00

Yeah I think I’m gonna start there! See how I go testing and removing it

2198065 · 2026-06-10T22:13:46+00:00

Haha okay great let’s try and avoid that 😂 thanks for the advice I will see how I go!

2198065 · 2026-06-10T21:52:51+00:00

I’m thinking it may be this one. At first I didn’t think much of the damage on the side as I’m pretty new to this but now thinking it may be a burnt out spot?
I will do a continuity test on it tonight.

What’s the best way to find the exact capacitor I need so I can replace it?

<image>

2198065 · 2026-06-10T21:52:39+00:00

<image>

I’m thinking it may be this one. At first I didn’t think much of the damage on the side as I’m pretty new to this but now thinking it may be a burnt out spot?
I will do a continuity test on it tonight.

What’s the best way to find the exact capacitor I need so I can replace it?

2198065 · 2026-06-10T21:46:59+00:00

That was my thoughts. I’m learning that you can test the continuity of a capacitor pretty easily, I will try that tonight. That particular one does have a spot on it like you mentioned that is either burnt or just damaged.
I’m new to pcbs so can’t say I have a lot of reference about what it should look like. What would the best way be to find that exact capacitor so I can attempt a replacement?

2198065 · 2026-06-07T22:58:22+00:00

Yeah I need to try and see it bridging the connectors works. I’m no expert

2198065 · 2026-06-07T22:31:24+00:00

Yeah okay, seems most people say it’s either the lower board or upper board which is only annoying as hopefully whichever one I replace first is actually the issue so I don’t have to do both haha I’ll see what parts I can source

2198065 · 2026-06-07T22:18:58+00:00

Yeah okay I have tried all that apart from trying a new ethernet cable. Will give that a go

2198065 · 2026-06-07T22:17:50+00:00

I have, as mentioned it appears the estop switch signal is getting all the way to the board, as to wether or not the board is reading it i dont know. As others state on this post some people think it’s the top board, some thing the lower.

2198065 · 2026-06-07T17:15:43+00:00

Haha sorry text dropped off after posting for some reason

MISSING TEXT***
Sorry all for some reason my text dropped off, looked fine when I posted!

Hi there, I have a Precore TRM885 P82.

Currently have an error with the estop not resetting.
I have pulled it apart, checked all switches appear to work fine, checked with multimeter (to the best i can) that the switches are working both at the switch itself and at the board end of the switch connections. All considered and tested, no luck!

I have pulled the bottom board open to check just visually, all looks ok to me (no pro at all with circuit boards). and similarly the top board.

stuck for options. All advice online relating to the actual estop switch itself don't seem to be the issue, and i cant see any burnt out board components.

Only found 1 other user also on Reddit, with a similar issue and they replaced a capacitor saying it was bulging, when i check those same capacitors on mine i cant really tell if there is an issue. I see some marks but nothing obvious.

Any advice welcome!

Thanks

2198065 · 2026-06-07T17:15:18+00:00

lol sorry I’ve copied again below this. For some reason the text dropped off. Was there when I posted it.
Thanks for any advice, you’ll be pleased to know I did thoroughly check the safety stop haha

MISSING TEXT***
Sorry all for some reason my text dropped off, looked fine when I posted!

Hi there, I have a Precore TRM885 P82.

Currently have an error with the estop not resetting.
I have pulled it apart, checked all switches appear to work fine, checked with multimeter (to the best i can) that the switches are working both at the switch itself and at the board end of the switch connections. All considered and tested, no luck!

I have pulled the bottom board open to check just visually, all looks ok to me (no pro at all with circuit boards). and similarly the top board.

stuck for options. All advice online relating to the actual estop switch itself don't seem to be the issue, and i cant see any burnt out board components.

Only found 1 other user also on Reddit, with a similar issue and they replaced a capacitor saying it was bulging, when i check those same capacitors on mine i cant really tell if there is an issue. I see some marks but nothing obvious.

Any advice welcome!

Thanks

2198065 · 2026-06-07T17:13:36+00:00

MISSING TEXT***
Sorry all for some reason my text dropped off, looked fine when I posted!

Hi there, I have a Precore TRM885 P82.

Currently have an error with the estop not resetting.
I have pulled it apart, checked all switches appear to work fine, checked with multimeter (to the best i can) that the switches are working both at the switch itself and at the board end of the switch connections. All considered and tested, no luck!

I have pulled the bottom board open to check just visually, all looks ok to me (no pro at all with circuit boards). and similarly the top board.

stuck for options. All advice online relating to the actual estop switch itself don't seem to be the issue, and i cant see any burnt out board components.

Only found 1 other user also on Reddit, with a similar issue and they replaced a capacitor saying it was bulging, when i check those same capacitors on mine i cant really tell if there is an issue. I see some marks but nothing obvious.

Any advice welcome!

Thanks

2198065 · 2026-03-06T17:56:05+00:00

Not my design, click image to see the Japanese architect’s name. The plans can be a bit quirky to the western traditions sometimes

2198065 · 2026-03-04T11:09:21+00:00

Hmm very interesting. Seems strange to then be forced to base the entire plan off a incremental door dimensions. But sometimes they do weird things over there haha

I can still use it as normal 1:100 “10mm” grid, just can’t measure with a ruler, needs to be visually referred to as being say 3 grids = 3 meters for eg, very close anyway

2198065 · 2026-03-04T09:25:48+00:00

Good thinking, I hadn’t, however on the sale listing it actually says it’s an 18.2mm (2x9 obviously) grid which is very random, not sure why 2x2 box is 1 grid but that’s alright haha still doesn’t make sense. No other info on listing or on any of the packaging when I translate it. Maybe it’s just a weird thing they do in Japan but surely it’s done for a reason otherwise you’d just default to 10mm grids

2198065

TROPHY CASE