Potentiometer issue

Topics about imported CNC routers, machines and engravers from China, india or japan
Rochy
Posts: 2
Joined: Sun Mar 13, 2016 11:40 am
Location: Glace Bay

Potentiometer issue

Postby Rochy » Sun Apr 24, 2016 10:16 am

I need some help here guys. I have a 50W Chinese laser which has been functioning well until recently when I started having a problem with the Potentiometer on this laser. It has been operating in a linear fashion working from 0 to 12. The maximum power is 12. Something happened recently (I don’t know what) and it is now producing power between 1 and 5. 3 seems to be the giving the maximum power no on this laser and then it tapers away in either direction. I am not pro in electronics but I have guessed that there some fault in the pot. My question is, what is the correct specification for the pot? as the one that I have is illegible.

Voatman
Posts: 4
Joined: Sat Jul 25, 2015 1:37 pm

Re: Potentiometer issue

Postby Voatman » Sun Apr 24, 2016 10:17 am

Saying that the specifications are illegible means that you can get to the pot. However, the symptoms that you give do not suggest that it is the pot. What I would have expected from a faulty pot is worn or burnt track due to poor contact from the wiper.

marandaJoan
Posts: 5
Joined: Sun Aug 30, 2015 8:57 pm
Location: azores

Re: Potentiometer issue

Postby marandaJoan » Sun Apr 24, 2016 10:18 am

I get your problem. What is the model and make of your laser?

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Pandora
Posts: 4
Joined: Thu May 21, 2015 10:33 am

Re: Potentiometer issue

Postby Pandora » Sun Apr 24, 2016 10:20 am

What kind of the pot do you use? Have you tried swapping it with another?

Rochy
Posts: 2
Joined: Sun Mar 13, 2016 11:40 am
Location: Glace Bay

Re: Potentiometer issue

Postby Rochy » Sun Apr 24, 2016 10:23 am

marandaJoan wrote:I get your problem. What is the model and make of your laser?

It is a Chinese K50 that I purchased from eBay.
Pandora wrote:What kind of the pot do you use? Have you tried swapping it with another?
It is a 2 Watt 1K pot. I have tried with another but it worked for a will then it started the problem again.

Fanterii
Posts: 1
Joined: Sun Apr 10, 2016 8:23 am
Location: Luanda

Re: Potentiometer issue

Postby Fanterii » Sun Apr 24, 2016 10:30 am

Seems like everyone is complaining about these Chinese things. I wonder if every Chinese machine is just like that: breaking down easily.


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