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« Whoops... | Home | Getting a little furt… »

A little progress...

15 08 09 - 11:13 I took a look at the board today and found, on the right edge, a nicely bulging SMD capacitor. It's C62, and it's marked C475.

Later edit: 6.3v, 0.475 microfarad - if i'm reading it right according to here - however C caps (the 6.3v part) are "rare" according to the document I read. There's a cap below it marked the same - I guess i could try to get my hands on a capacitance meter and measure that one - I do need a new/better multimeter...)

This page says otherwise - 16v, and 47*10^5 picofarads (47 microfarads) - that sounds better at least - because it's electrolytic as the board has a + sign next to it. I'd say this one is the one I'd trust.

It's right next to U6, which is a HTC TJ7660 C_835 which is a simple chip to invert voltages.

But the cap isn't the cap used by the converter - it's connected between the output and ground - probably to clean up the output waveform. I need a scope to really see what's going on here I guess, but my multimeter reports 1.5v where there should be 5. Time to do some SMD soldering I guess (after getting the components).

It still smells bad in here :|

I connected the negative voltage out pin straight to the contrast in pin and I see something there - it looks like a few horizontal lines, some sign of life.

I may just buy another LCD - a 192x64 one.

In my annoyance, I forgot to mention - it's a second screen - a graphical one with 128x64 pixels.
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