iamlark Posted August 17, 2005 Report Share Posted August 17, 2005 so last night, right after i got the core to finally work, my C64 PSU died (i think)so i'm wondering. could i power both core and sid using one 12v power adapter if i removed the voltage regulator from the sid chip or would this cause damage to the chips and circuts. if not the regulator, what would i bypass in order to be able to use the SID with a plain 12v power adapter?if i do not use the c64 psu designs to power my sid, how would i change the wiring between core/sid. would anything else change? Quote Link to comment Share on other sites More sharing options...
Milkmansound Posted August 19, 2005 Report Share Posted August 19, 2005 your PSU did not die - the internal fuse blew. Have fun replacing it! Its buried in plastic - I used a dremmel to get at mine, but decided to just solder a new fuse over the old one using just a little bit of the metal that I was able to uncover from the old fuse after like 15 minutes of grinding away at who knows what material. Its a real pain - and its why I am moving on to another power supply myself. Quote Link to comment Share on other sites More sharing options...
iamlark Posted August 19, 2005 Author Report Share Posted August 19, 2005 your PSU did not die - the internal fuse blew. Have fun replacing it! Its buried in plastic - I used a dremmel to get at mine, but decided to just solder a new fuse over the old one using just a little bit of the metal that I was able to uncover from the old fuse after like 15 minutes of grinding away at who knows what material. Its a real pain - and its why I am moving on to another power supply myself. im thinking building a new PSU from scratch may be easier.... :'( Quote Link to comment Share on other sites More sharing options...
Milkmansound Posted August 19, 2005 Report Share Posted August 19, 2005 trust me - that C64 supply with the fuse is just a heavy pain in the ass. Once you have an AC wallwart doing the job, you will be better off. BG micro has AC wallwarts rated at 1A for $2.99 - get one and play around with it, you'll never look back to the C64 supply again! Quote Link to comment Share on other sites More sharing options...
iamlark Posted August 19, 2005 Author Report Share Posted August 19, 2005 trust me - that C64 supply with the fuse is just a heavy pain in the ass. Once you have an AC wallwart doing the job, you will be better off. BG micro has AC wallwarts rated at 1A for $2.99 - get one and play around with it, you'll never look back to the C64 supply again!wow. i wish i would have known that earlier. i just put in an order to BG Mirco right before the PSU blew.i'm running off of a couple of wall-warts right now, but i think in my final design, i might use a computer PSU, or something similar. i picked up an LCD with an EL backlight and it needs -5v. i figure those PSUs will give me that and +5v, +12v.although, i just read something about computer PSU (switching type) are not good because they will create a lot of noise or something along those lines. we'll see. that's way off. i have to get everything running first. Quote Link to comment Share on other sites More sharing options...
Milkmansound Posted August 23, 2005 Report Share Posted August 23, 2005 well, the SID is noisey enough on its own - but you can look at that two ways:1 - whats a little more noise?2 - so much noise already, more is not good!the internal rectification on the modules is not to be dismissed! I mean, I had both the core and SID modules running off of a single 9VAC supply that was rated high - so obviously, they are rectifying to DC and providing enough voltage to get the synth to operate with just a little DC power inlet in the rear - and no monster C64 psu to lug along. Man is that thing huge!!!A standard AC PSU - 9-12V should be more than enough once rectified to get the job done. Or build a PSU from scratch using that AC supply to get the 2 voltages if you want - however, there is a beefy regulator onboard each module! What is it there for if no to allow for a single AC supply???? Quote Link to comment Share on other sites More sharing options...
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