1 Reply by Colleen

(19 replies, posted in Nintendo Handhelds)

my.Explosion wrote:

Hmm. Yeah. I noticed a hum too. So far only installed two successful backlight mods but one of them has a clearly louder hum emitting from the internal speaker.
Not that that really matters, it just purrs like a little machine kitten.

I could only expect that it's a little like what happens to computers where there this thing: like if you have a sound cable thingy hanging too close a graphics card or something pressure on the graphics card can actually be heard through speakers or headphones. Very common "problem". ???

I wouldn't have minded if it were a nice hum, but it was a high-pitched whine.  I ended up swapping the LCD board with another one instead of bridging and grounding the biversion chip.  This one is so much quieter.

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2 Reply by Colleen

(19 replies, posted in Nintendo Handhelds)

It's a good idea.  Could I ground the unused pins by bridging them and just grounding the bridge, instead of running a separate wire from ground to each leg? I'm going to hold off for a bit to see if anyone else has any experience with this exact issue, but if not I'll probably try opening it up again and grounding.

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3 Reply by Colleen

(19 replies, posted in Nintendo Handhelds)

It increases the contrast.   What he said ^

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4 Topic by Colleen

(19 replies, posted in Nintendo Handhelds)

My DMG has a louder whine now that it's been biverted.  After I biverted my last one, I noticed that the whine sounded louder, but I wasn't sure.  This time I tested it before biversion to compare to how loud it would be after biversion, and it's definitely louder after.  I haven't installed a backlight in it yet.  Does anyone know what the cause might be? Does anyone else have the same issue? I used the small chip from nonfinite (74hc04 SMT Biversion Kit).

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5 Topic by Colleen

(0 replies, posted in Nintendo Handhelds)

I just biverted my DMG and there seems to be what looks like interference on the screen.  It appears to mostly go away when I move the screen PCB away from the PCB with the biversion chip on it, but not always entirely.

Do you think that I may not have been thorough enough in cutting the traces? I appreciate any ideas that you might have.

Edit: The problem was that I had cut the trace too high.  When I patched it with a wire and cut the trace lower where I was supposed to, it started working perfectly.

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