GT2560 3 transistors are overheating - almost burn

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pekote
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Joined: Fri Jun 26, 2015 10:01 pm

GT2560 3 transistors are overheating - almost burn

Post by pekote » Wed May 04, 2016 3:45 am

There are three transistors in the GT2560 that are really hot, probably more than 100°C. If I touched them with wet fingers, it is possible to observe boiling water.

I'm pretty sure that the life of the transistors operating at this temperature will be very short...

My printer has about 4 months operating OK, but I was wondering if other users with the GT2560 observed the same issue, and experienced any failure.
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Admin
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Re: GT2560 3 transistors are overheating - almost burn

Post by Admin » Fri May 06, 2016 5:54 pm

take care of the wires, do not peel off the cable too much

pekote
Posts: 12
Joined: Fri Jun 26, 2015 10:01 pm

Re: GT2560 3 transistors are overheating - almost burn

Post by pekote » Fri May 06, 2016 7:41 pm

In fact, I have to correct the 1st post, there is only one transistor that is almost burning, the others are hot but not so much.
This is the one that heats the heat bed, the third counting from the left to the right in the picture. This transistor is really hot.

fabrizio
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Re: GT2560 3 transistors are overheating - almost burn

Post by fabrizio » Mon Aug 21, 2017 5:20 am

salve,uscita del piatto riscaldato mk2a non va piu ,scambiandola con exstruder il piatto funziona cosa posso fare.

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William
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Re: GT2560 3 transistors are overheating - almost burn

Post by William » Mon Aug 21, 2017 12:03 pm

You should replace a new board.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

alang
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Joined: Mon Oct 24, 2016 7:06 pm

Re: GT2560 3 transistors are overheating - almost burn

Post by alang » Tue Dec 05, 2017 2:16 pm

Having the same problem.

Can the Mosfet be replaced (will this fix the problem)?

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William
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Re: GT2560 3 transistors are overheating - almost burn

Post by William » Tue Dec 05, 2017 4:40 pm

alang wrote:
Tue Dec 05, 2017 2:16 pm
Having the same problem.

Can the Mosfet be replaced (will this fix the problem)?
I tried to replace it and solve this issue.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

sasodoma
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Joined: Sat Aug 19, 2017 4:28 am

Re: GT2560 3 transistors are overheating - almost burn

Post by sasodoma » Mon Jan 29, 2018 1:57 am

If anyone else is experiencing this issue I recommend replacing the bed MOSFET with an IRLB8721. I did this today and the mosfet is now running a lot cooler. For 60°C you don't even need a cooling fan for it.

alang
Posts: 10
Joined: Mon Oct 24, 2016 7:06 pm

Re: GT2560 3 transistors are overheating - almost burn

Post by alang » Mon Feb 19, 2018 6:29 pm

I replaced mine with an IRL8743 and its running very cool.

I also soldered the 12V supply directly to the board as when the mosfet was faulty, it melted the 4 pin power connector.

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William
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Re: GT2560 3 transistors are overheating - almost burn

Post by William » Mon Feb 26, 2018 2:08 pm

alang wrote:
Mon Feb 19, 2018 6:29 pm
I replaced mine with an IRL8743 and its running very cool.

I also soldered the 12V supply directly to the board as when the mosfet was faulty, it melted the 4 pin power connector.
Cool!
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

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