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crosstydown
Newbie

Joined: 29/11/2013
Location: Canada
Posts: 23

Posted: 10:40am 14 Jul 2015

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hi all,

my circuit gizmo work for about 1 year to control my greenhouse but today the video stop working but program still working and is not my monitor try on another monitor but no video !!! if someone know what to do

WhiteWizzard
Guru

Joined: 05/04/2013
Location: United Kingdom
Posts: 2794

Posted: 11:18am 14 Jul 2015

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Could there be a broken track on the PCB at the VGA output? If possible, perform a continuity check between each vga socket pin and the relevant point on the PCB. Not all pins are connected so refer to circuit diagram. VGA Pins 9, 13, and 14 are worth checking first.

Use a component lead off-cut (i.e. from a resistor) and insert it into one of the VGA socket holes, then use this to check for any breaks possibly at the point the VGA pins are soldered onto the PCB.

If the monitor cable was 'strained' in some way then it is possible a track is broken (probably more likely to be a sync pin - otherwise you will see a 'strange' colour display if the R, G, or B signals were lost).

Also, do you have the means to reload the firmware? This will eliminate any software related issue (which I have never come across before - but maybe worth doing if the above continuity checks are all ok).

Let us know if you find out what is causing the issue!

WWEdited by WhiteWizzard 2015-07-15

For everything Micromite visit micromite.org

Direct Email: whitewizzard@micromite.o

bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2870

Posted: 04:04pm 14 Jul 2015

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Hi Crossty,

are you using VGA or COMPOSITE?

Maybe the option setting has been corrupted and reset back to a mode that cannot be displayed on the screen you are using (sounds the most logical cause)..

It has been a while since I have played with a maximite so I cannot remember the command to st for the various display modes.

Regards,

Mick

Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<

bigmik

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2870

Posted: 04:16pm 14 Jul 2015

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Crossty,

Have a read of the manual in the CONFIG section and the OPTION section there are commands there that change the way the Video is displayed.

Eg.

CONFIG COMPOSITE NTSC | PAL | DISABLED

or

CONFIG VIDEO OFF | ON

OPTION VIDEO OFF
or
OPTION VIDEO ON

Mik

Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<

crosstydown
Newbie

Joined: 29/11/2013
Location: Canada
Posts: 23

Posted: 03:31pm 27 Jul 2015

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thanks for help !!

i am in vacation

when i return i will try your suggestion and get back to the forum

VK2MCT
Senior Member

Joined: 30/03/2012
Location: Australia
Posts: 120

Posted: 04:39pm 27 Jul 2015

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I suggest sending a photo of the board and where it is.
A greenhouse sounds like a pretty hostile place for a circuit board.

John B.

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