Spoken like t true Mandalorian...
I like the Nu-Brick, I even made a video:
https://youtu.be/qmxFrXbRZys
This is the way....:
https://youtu.be/uelA7KRLINA
Ben
________________________________
From: torontocbm-bounce@xxxxxxxxxxxxx <torontocbm-bounce@xxxxxxxxxxxxx> on
behalf of Chiron Bramberger <dmarc-noreply@xxxxxxxxxxxxx>
Sent: December 22, 2021 8:59 AM
To: torontocbm@xxxxxxxxxxxxx <torontocbm@xxxxxxxxxxxxx>
Subject: [torontocbm] Re: Looking for power supply replacements
First, the C128 power supplies are switched based power supplies and they were
well made.
Second, and I’m oversimplifying, but what you’re testing with the C64 power
supplies is to make sure they aren’t failed and barfing out *way* too much
voltage, which is the most common way a failed power supply kills a C64.
Finally, the problem with the idea of a “standard battery of tests” is that you
need like a disk drive, an analog set of pots, a light pen, possible multiple
user port cartridges, a few different kinds of expansion port cartridges, a
tape drive, and a bunch of programs that exercise each and every function of
every chip.
The point of the diagnostic harness is to replicate that process and hardware
in a streamlined and unified way.
The diagnostic harness and cartridge *are* the standard battery of tests.
Trust me, this is the way.
Sent from my iPhone
On Dec 21, 2021, at 9:53 PM, Joe Somebody <dmarc-noreply@xxxxxxxxxxxxx> wrote:
Finally dug out the VIC-20, C-64, and 128. I have no idea if they still power
on and "how much".
The VIC-20 uses the older style (2-prong) plug and is labeled 9V. I don't have
the original supply, but I assume I'm looking for a 9V 3A one.
1) I saw on eBay some 11.5V supplies but those are probably for a different
model.
2) I saw a video where someone took a Honeywell CCTV supply (I saw one that was
9V, 2.5A) and just used a standard two prong connector + plastic to hold down
the switch.
Do you have any better ideas on a replacement?
The C64 came with the gel-filled power supply (no screws). I have a second 3rd
party one from the same era that I would trust more. I saw people simply
running a multimeter test over the 5V pins (the problematic one), but then I
saw someone running the test over a load for further testing. The resistor he
used was huge.
1) Is the pin test good enough? Or should I just assume they are bad and get a
new one? If I get a new one, I've seen a couple of companies making new
supplies. Any recommendations?
The C128 came with a supply that is the same shape as the Amiga 500, just
heavier. Do these have the same issues as the C64 ones, or because a C128 is
relatively rare no one really bothers with making C128 supplies? It has a
square connection, versus the round one on the C64.
I really don't want to buy a diag cart and harness just to "prove" everything
this functioning. Is there another way to test them, like going through a
standard battery of use-cases?
Thanks.
