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GM328 white screen
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Topic: GM328 white screen (Read 4170 times)
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spikeyhair
Newbie
Posts: 1
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GM328 white screen
«
on:
February 27, 2019, 06:30:02 pm »
Hi,
I probably have posted in the wrong section so sorry about that.
However I have built one of those gm328 component testers and am getting a white screen on power up. Can some one help me out please?
Things I have tried so far:
Checking mcu with avrdude using a usbtiny ISP. The chip wouldn't give a signature so replaced it with another m328p.
Tried flashing various fw from links in this forum.
The version of product is the colour TFT gm328 with rotatory encoder and frequency generator. I got it from amazon.
https://www.amazon.co.uk/KKmoon-Transistor-Capacitance-Frequency-Generator/dp/B01HCU8VTM/ref=sr_1_3?ie=UTF8&qid=1551291890&sr=8-3&keywords=kkmoon+gm328
Hope someone can point me in the right direction with fault finding this? Hopefully I have built it correctly and its just a firmware issue?
Cheers!
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Teledog
Regular Contributor
Posts: 217
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Re: GM328 white screen
«
Reply #1 on:
February 28, 2019, 04:03:54 am »
Definitely wrong zone, but ...are you using a decent power supply?
Those kits are infamous for white screens when using crappy batteries.
G'luck!:-)
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stj
Super Contributor
Posts: 2186
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Re: GM328 white screen
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Reply #2 on:
March 04, 2019, 05:55:20 am »
it's NOT a GM328, those are green backlit monochrome.
it's an "AY-AT" from some scumbag seller using the wrong description to get more search hits.
the difference is important if you want to flash it - try AY-AT firmware.
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drescherjm
Contributor
Posts: 25
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Re: GM328 white screen
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Reply #3 on:
March 18, 2019, 07:39:29 pm »
I had the same behavior on first power up of my GM328 2018 kit. The problem was fixed after I resoldered the male pin header for the display.
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I have BS degrees in CS and EE both in 1996. Since this time I have worked for the same medical imaging research team primarily as a programmer. Now at 47 I am trying to get back into electronics projects.
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