Category Archives: Fix me.

Things that needed repairing.

Note to self: 26.0V >> 2.60V — A short ChipQuik review

Posted on August 4, 2009 by robert

Nothing good can come from a freak idea after midnight ! I was tired and should have gone to bed. But when I get too tired I can’t fall asleep anymore and turn into a zombie, looking for something stupid … Continue reading →

Posted in Arduino., Electronics., Fix me., Soldering & PCBs. | Tagged , , , , | 6 Comments

Jyetech AVR digital oscilloscope DIY KIT — trying to fix it – part 1

Posted on July 12, 2009 by robert

The symptoms since a firmware upgrade (and downgrades, re-upgrades…): strange characters on the display for SEC/DIV system freezes +/- buttons are ignored (but still work physically) the ADC chip doesn’t get a CLK signal during a freeze My theory: The … Continue reading →

Posted in DIY., Electronics., Fix me. | Tagged , , , , | 2 Comments

Jyetech AVR digital oscilloscope DIY KIT — Firmware upgrade odyssey

Posted on July 9, 2009 by robert

I bought the DIY KIT at seeedstudio recently, as I needed to feed my soldering obsession. Here are some images of the KIT coming right out of the box: I had to use my milling machine, because the front panel … Continue reading →

Posted in DIY., Electronics., Fix me. | Tagged , , , , | 5 Comments

Trying to fix the sound of my Sega Game Gear — part 2

Posted on February 6, 2009 by robert

I was lucky :-) It seems the guys at Sega just replaced the 470µF capacitors shown in the reference setup for the TDM2822M dual amplifier with 47µF ones. Other people have had problems with these too, so I just pulled … Continue reading →

Posted in Electronics., Fix me. | Tagged , , , , | 3 Comments

Trying to fix the sound of my Sega Game Gear — part 1

Posted on February 3, 2009 by robert

Last time I turned it on, I didn’t get the usual boot-up sound of ‘Seeeeegaaaaa’. There’s a little chip next to the earphone plug. I haven’t checked yet, but I suspect it’s some kind of amplifier. So I’ll warm up … Continue reading →

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