2 rows of black squares

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adey2003
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Re: 2 rows of black squares

Post by adey2003 » Mon Oct 17, 2016 3:03 pm

Will sort video asap
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William
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Re: 2 rows of black squares

Post by William » Mon Oct 17, 2016 3:07 pm

You can check if the back of the board has a bad soldering or something else.
And you said it works sometimes,sometimes it doesn't.So how it is now?
Could you post some videos or pictures about it cuz i wanna see it.
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William
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Re: 2 rows of black squares

Post by William » Mon Oct 17, 2016 3:10 pm

OK,thx
-Keep your mind and try to test it. :)
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adey2003
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Re: 2 rows of black squares

Post by adey2003 » Tue Oct 18, 2016 11:16 pm

Link to video of issue

https://m.youtube.com/watch?v=WG6A1ImKYac
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William
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Re: 2 rows of black squares

Post by William » Wed Oct 19, 2016 12:26 pm

Some tips:
1.Remove all the stuffs on the board(the wirings,the driver A4988...) except the power and LCD wiring to see how the LCD goes.
2.Like what i said before,measure the voltage between the 2 pins(both sides of Crystal Oscillator)and GND separately.
BTW,could the board be detected by the device manager?
-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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adey2003
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Re: 2 rows of black squares

Post by adey2003 » Wed Oct 19, 2016 5:29 pm

Still does the same after the wires are removed

Device is connected to pc, it how ever keeps stating there is no startup signal

Will have to borrow a volt meter again check other item.
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adey2003
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Re: 2 rows of black squares

Post by adey2003 » Wed Oct 19, 2016 7:42 pm

The voltage from he Crystal oscillator is showing as 0.73 v
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William
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Re: 2 rows of black squares

Post by William » Thu Oct 20, 2016 3:12 pm

The two sides of Crystal oscillator and GND are both 0.73V?
BTW,could you find a spare Crystal Oscillator to replace the one on the board?Cuz i suspect the one on the board was broken.
-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.
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adey2003
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Re: 2 rows of black squares

Post by adey2003 » Thu Oct 20, 2016 5:06 pm

No i dont have a spare crystal ocsillator, but when i tried my friends spare board, lcd and printer was fine
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William
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Re: 2 rows of black squares

Post by William » Thu Oct 20, 2016 5:57 pm

Now you can contact the seller to talk about it.
-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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