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Post by Syniphas on Jun 7, 2010 19:49:32 GMT -5
Scavenging for parts I found a store selling old computer shit for CHEAP, picked me up 2 Pentium motherboards and a 4.2GB HD -- guy even threw in a case for good measure at no additional costs -- put it all together with the shit I was collecting, and now I have a fully working 233mhz Pentium with 64mb of RAM, 56x CD drive, floppy drive, 4.2GB HD, running Windows 95, all in perfect condition!
Problem is, the SB16 died out not much later after putting everything together (after a single day of use since I bought it from the internet, used obviously). Getting the SPK OUT to my PC's LINE IN and amplifying the noise about 40db you can make out a few recognizable tones, and it is, the SB16 is still somehow working! What
So I'm thinking it's capacitors or voltage regulators or something but I can't be sure since I have no idea how electronics work. It's a CT2940 for specification's sake. Halp?
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Post by Tom Maneiro on Jun 7, 2010 19:55:12 GMT -5
If you're bored, get a multitester, and start measuring each capacitor, resistor, and other parts in the card. You won't find schematics for SB16s anywhere, so you need to take a look at each part rating, measure it, and see if it fits. Most likely you will need to desolder a few things for measuring. Better go to an electronics lab, or simply get another SB16, whatever is cheap for you
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Post by Syniphas on Jun 8, 2010 12:27:12 GMT -5
I don't think I can find an electronics lab or another SB16 easily, and Tiido says some of the components need to be tested while running -- risking frying the motherboard up. This is going to be tough.
Also, how come the title is "1"? Could swear I did type in a proper title...
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Post by Tom Maneiro on Jun 8, 2010 20:41:11 GMT -5
Just Do It(tm)
(but first, get a PC that you won't mind blowing up for testing)
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dave
Moldy Popcorn
You can't beat the raw processing power of a Tualatin PIII!
Posts: 26
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Post by dave on Jun 9, 2010 4:59:27 GMT -5
Man, it's been ages since I last posted here. You could try and scab an old ESS ES186x or another sound card with SB compatibility, or go a couple better and find an AWE32/64. I've used an ES1869 to fix the LCD screen i'm using now . Question - What OS are you running? We'll just forget I even typed that
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Post by TheMVRules on Jun 9, 2010 9:03:41 GMT -5
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Post by Syniphas on Jun 10, 2010 13:41:43 GMT -5
Man, it's been ages since I last posted here. You could try and scab an old ESS ES186x or another sound card with SB compatibility, or go a couple better and find an AWE32/64. I've used an ES1869 to fix the LCD screen i'm using now . Question - What OS are you running? We'll just forget I even typed that Win 95 with not much in it yet, still need to get a serial mouse. As for the soundcard, I'll see if I can get a new one, though that's seems unlikely, and the chances of me fixing this one are null.
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oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on Jun 11, 2010 1:07:54 GMT -5
I don't think I can find an electronics lab or another SB16 easily, and Tiido says some of the components need to be tested while running -- risking frying the motherboard up. This is going to be tough. Also, how come the title is "1"? Could swear I did type in a proper title... Do a visual inspection of the components on the PCB. Did a surface mount part fall off ? Chances are, something at the mixing stage got messed up. I say that because if you can hear something that's not noise at 40dbm, then this is just some AC variation, and the major functional parts are still working And uhm.... SB16's may be pretty rare in your area, but in my area, they're not worth a dime (I've thrown some of my own away - oh I desolder the OPL chips though)
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Post by Tom Maneiro on Jun 11, 2010 3:35:31 GMT -5
In my university, we had STACKS of SB16s (aside of odd things like IBM MWave's) But i found my AWE64 and my Live! there Unfortunately, i'm no longer there (Gah, i should have stashed a few of those - now my only spares are a SB 128PCI and a couple of shitty Crystal/Analog Devices soundcraps)
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Post by Syniphas on Jun 11, 2010 11:35:09 GMT -5
SB16s are pretty hard to get here, they were the god damn shit in the 90's though.
Yes, it's in the mixing, but nothing fell of the board -- it worked fine for a day, and the next one it just died. I have no idea how to fix it honestly.
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oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on Jun 11, 2010 12:59:44 GMT -5
SB16s are pretty hard to get here, they were the god damn shit in the 90's though. Yes, it's in the mixing, but nothing fell of the board -- it worked fine for a day, and the next one it just died. I have no idea how to fix it honestly. Could the volume control be turned down too low ? It's actually pretty hard to kill these cards you know - old technology is pretty robust The old SB16's use to have a volume control potentiometer on the card. Maybe this part is failing?
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Post by Tom Maneiro on Jun 11, 2010 17:11:51 GMT -5
The CT1740 (SB16 CSP) has a volume contron in the output jacks: The CT2940 is a later Plug'n'Pray SB16 OEM Value thing, and has no rear volume control (as many later SB16 models): highrez at Wikipedia
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Post by 3vix6 on Jun 12, 2010 23:47:30 GMT -5
Wow... ISA.. That brings back memories.
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Post by Syniphas on Jun 13, 2010 3:10:36 GMT -5
Yep, that's the one... First day I managed to get the computer running I played a few games on it with OPL sound working nicely, the other day they simply didn't play anymore...
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oompa loompa
I AM THE GOVERNATOR
"Git 'Er Dun!"
Posts: 1,301
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Post by oompa loompa on Jun 13, 2010 5:26:24 GMT -5
Yep, that's the one... First day I managed to get the computer running I played a few games on it with OPL sound working nicely, the other day they simply didn't play anymore... Uhm, Tom showed us two cards , which one is yours? Top or bottom? I have a CT1740 (the top one). I really don't like the plug and play ones - they just go straight to the trash. Good old staticy, distorted sound because of the low SNR ratio.
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