That Hakko has great suction, unlike my no-name knock-off. @1:44, you can actually see a bit of solder get dropped on the board a ways away from the pin, then sucked right back up @1:45. Very nice.
Sweet memory lane. Commodore repair guy from back in the day here. The 1700 and 1750 are not always identical inside however they are very similar. Your 1700 has the dma controller in ceramic dip form (you demonstrate it in this video) and is much more rare and desirable/valuable since it’s an early 1700. The 1750 usually has a PLCC dma controller inside although early ones may have had that ceramic dip chip. I have never seen a 1750 with one in the wild though. Nice solder work btw.
Looking at that bare U18 area in the REU. It makes me think of the (mostly often) empty U36 socket in the C128s and the about 13 different Internal function ROMs available for it out there... and then I cannot help but wonder, what "you" potentially could put into the U18 on the REUs 🤔
I can't blame you for not re-orientating all the sockets. If someone's replacing a chip later, all the other chips should make it obvious if they're putting it in backwards. And hey, at least you realized before installing the chips backwards! Great vid - thanks for sharing your experience.
Minor nitpick, I desolder chips one leg at a time, not one chip at a time. That way they have more time to cool off, less thermal stress and a higher chance of survival, so you can reuse them.
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That Hakko has great suction, unlike my no-name knock-off. @1:44, you can actually see a bit of solder get dropped on the board a ways away from the pin, then sucked right back up @1:45. Very nice.
I had an aoyue desoldering station prior to purchasing the Hakko. The difference is monumental.
Sweet memory lane. Commodore repair guy from back in the day here. The 1700 and 1750 are not always identical inside however they are very similar. Your 1700 has the dma controller in ceramic dip form (you demonstrate it in this video) and is much more rare and desirable/valuable since it’s an early 1700.
The 1750 usually has a PLCC dma controller inside although early ones may have had that ceramic dip chip. I have never seen a 1750 with one in the wild though.
Nice solder work btw.
Looking at that bare U18 area in the REU. It makes me think of the (mostly often) empty U36 socket in the C128s and the about 13 different Internal function ROMs available for it out there... and then I cannot help but wonder, what "you" potentially could put into the U18 on the REUs 🤔
I can't blame you for not re-orientating all the sockets. If someone's replacing a chip later, all the other chips should make it obvious if they're putting it in backwards. And hey, at least you realized before installing the chips backwards! Great vid - thanks for sharing your experience.
Fortunately Tony is a friend. I explained my error to him. :)
I brought my bag of chips! Lol thanks man!!
Minor nitpick, I desolder chips one leg at a time, not one chip at a time. That way they have more time to cool off, less thermal stress and a higher chance of survival, so you can reuse them.
Duly noted and not a bad idea. Thanks!
Great video! Very interesting. Is there a possiblitiy to access the 512kb Ram from BASIC?
Basic 7 had commands to directly deal with the REU. Robin Harbron did a great video about it.
Where'd you get that shirt? Love it.
Aliexpress! I got this and an MOS shirt :)