SIEG C6 Board photo

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ProfessorBean

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Hi guys, first post here.
I’ve just got my first lathe. I got it cheap because there was a problem with the motor not spinning. After a few hours of investigation I’ve found that the problem is on the board. The middle chip on the back is damaged. In order to replace the chip I need to know what the number on the back is. Since it’s damaged, I can’t see the number. Only partially

Does anybody happen to have a photo of the board? Or know the number. The board number is XMT-2380.

Thanks for any help.


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Is the chip burned/exploded or damaged some other way, like physically smashed? If the former, there may be more wrong than just the one chip-
The power supply should be checked before replacing it, if you can id the chip and buy it (AliExpress?)
Check online you might be able to find a schematic diagram with part #s
-Mark
If you are versed in reverse engineering it may be possible to deduce the type of chip by studying the surrounding circuitry
It may help if you can post some close up views of the board- I might be able to point out some clues for you
Is this a dc brush type motor or brushless dc?
 
Last edited:
markba633csi said:
Is the chip burned/exploded or damaged some other way, like smashed? If the former, there may be more wrong than just the one chip-
The power supply should be checked before replacing it, if you can id the chip and buy it (AliExpress?)
Check online you might be able to find a schematic diagram with part #s
-Mark
If you are versed in reverse engineering it may be possible to deduce the type of chip by the surrounding circuitry
Click to expand...

Hi mark, thanks for the reply.
It’s hard to say what has happened as it doesn’t look exploded/burnt, but there is a square of plastic missing off the back, in the centre. The square is around 2mm.
I’d doubt it could have been impacted by anything, as it is quite hidden, as you’d imagine.

I won’t lie, electronics aren’t my thing so I am open to anything you may suggest. Once I determined the board was faulty I took it to a local specialist who discovered the damaged chip. If I get the required number, he is going to order and replace for me.

The only schematic I could find online was for a smaller lathe and the numbers on that didn’t correspond to the last remaining digits that I could make out on my chip.

I would post a photo but I’m not allowed, because I’m new I believe.

Thanks again.


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To answer your edited part, the motor is DC brushed. The motor is fine as I have powered it, independent of the board.

Also, I can’t post photos


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f756d57b9ca58b48c0f7032268f87d33.jpg



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Are you referring to one of those chips directly attached to an aluminum heat sink?

If this is the main power supply board, perhaps it's a rectifier diode. If it's some sort of motor driver board, perhaps a mosfet.

Either way, if you are talking about one of the heat-sinked chips, the other chips similarly heat-sinked are probably identical, and you could pull a number off one of them.
 
(Ah, I sent my previous post as you were in the process of uploading more photos. I see the damaged chip now.)

As @markba633csi suggests, replacing that chip probably won't cure what ails ya. That chip likely exploded due to a malfunction in some other portion of the board. Probably on the power delivery side of things.

If I were you, I'd be searching eBay and the like for a complete replacement board, rather than trying to fix this one. Sure, it probably could be fixed, but sourcing a full replacement will probably be cheaper (if you're paying someone else to figure out what's wrong), easier, and faster.
 
If you look at the photos on the back of the side with the heat sinks, you can see the damage to one of the black chips


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Thanks JRaut,

It’s not what I want to hear but you’re probably right.

The cost for the guy to put me a new chip on £30. The cost for a new board, £200.

But if you think there may be another problem that caused it, it would be £30 wasted if it pops again


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