Re: Roland SC-88 repair
Posted on 2016-03-25, 23:01
Hard to give an estimate based upon that dump ... might be good, might be bad, might be incorrectly dumped.
Re: Roland SC-88 repair
Posted on 2016-03-25, 21:25
Also I looked at the eprom and downloaded the code that was on there but i have nothing to compare it to, to see if the code is good. There should be at least some kind of copyright message in plaintext there, if it's good and no suspiciously large areas are either just 00 or FF it should be okay. …
Re: Roland SC-88 repair
Posted on 2016-03-25, 19:57
Like "very warm" or unbareable to touch within seconds? IC11 and IC27 seem to be reliable for the LCD display, anything weird on any pins there (haven't extensively checked the schematic yet)? Also the PROM would be a potential candidate for dying of old age.
Re: Roland SC-88 repair
Posted on 2016-03-25, 18:56
I'd say first check if a !RESET signal is generated (should go from 0V to 5V and is connected to various chips) ... if that's the case chances are good the CPU(s) are working. In that case a repair might be worth a shot.
Re: Post your unidentified hardware here! thread
Posted on 2016-03-25, 17:58
Relais indicate either a ADC/DAC capture card or a modem with an unusual connector.
Re: Roland SC-88 repair
Posted on 2016-03-25, 17:43
What's the signal level for the clock? TTL or just a crystal with pull capacitors? If the later your logic probe might add a load that's too high to drive for the circuit. Is there a schematic and/or datasheets around?
Re: Roland SC-88 repair
Posted on 2016-03-25, 15:05
Okay, that looks like legit capacitor damage (I think the mania to swap every electrolytic cap asap is one of the worst pests that was been around in retro communities). Did you test the pads/signal lines for conductivity? Often they still look good but are actually broken. Otherwise: Did you check …
Re: Roland SC-88 repair
Posted on 2016-03-25, 10:09
I'd love to know how you came to the conclusion "bad caps".
Re: UrbEx & Hardware/Software stuff rescue
Posted on 2016-03-24, 04:19
Stojke wrote: What all living beings have in common is freedom, no one is allowed to deny me my wish to take something that is discarded and thrown away. Okay, I'll make sure to break any hardware beyond repair I discard in the future then 😀 Just to ruin your hobby.
Re: UrbEx & Hardware/Software stuff rescue
Posted on 2016-03-23, 22:41
Thing is taking stuff from abandoned places is usually frowned upon - because it kills all atmosphere, leaving blank rooms behind. Also depending on the situation who owns it, it might be considered theft. Only expection I'd make would be finding prototype stuff, but that's super rare to happen (the …
Re: Post your unidentified hardware here! thread
Posted on 2016-03-23, 21:56
GUS Clone = Primax Music Sound
Re: UrbEx & Hardware/Software stuff rescue
Posted on 2016-03-23, 10:23
Off older media I've scored the datebook of a priest on an Atari ST as well as a master thesis in medicine so far - the ST was bought off eBay, the other was a dumpster dive.
Re: List of rarest PC soundcards
Posted on 2016-03-22, 22:50
M16C = Primax Music Sound http://i.imgur.com/aq9Eimo.jpg (next to the DynaSonix box [nopes, all of that has been sold off])
Re: List of rarest PC soundcards
Posted on 2016-03-22, 20:59
I'm aware of photos for all of them, but don't any. dump: Killercard: http://i.imgur.com/OWsGbhw.jpg & http://i.imgur.com/kT0xaQu.jpg (owned by "anonymous_coward" - I think he's registered on here) UltraSound SoundBuddy: http://virtuallyfun.superglobalmegacorp.com/wordpress/wp-content/uploads/2014/ …
Re: List of rarest PC soundcards
Posted on 2016-03-22, 18:30
I'd remove "The Entertainer" for now, until the actual existence of that card has been confirmed. May have been an Innovation SSI-2001 prototype and/or prelimary design proposal that was never realized, but was overlooked to be removed in the final version of that game which has the settings for it. …
Re: List of rarest PC soundcards
Posted on 2016-03-22, 15:36
suddenly: - Primax SoundStorm Wave (GF1) - there are two variants of cards from the well known scanner and mouse producer. Re-labeled Altrasound as Sound M-16B and different Sound M-16C with 4x CD-ROM Interfaces. - Synergy ViperMAX (GF1) - same card later repacked as UltraSound Extreme, but with …
Re: List of rarest PC soundcards
Posted on 2016-03-22, 01:21
Beegle wrote: seob wrote: I also own a logitech soundman wave. This is also a card you don't see much. Isn't that card a Media Vision PAS16 clone? Slightly enhanced IIRC, but yeah, PAS16 chipset.
Re: UrbEx & Hardware/Software stuff rescue
Posted on 2016-03-21, 20:11
Check those: http://www.robotrontechnik.de/index.htm?/html/sonderbeitraege/sonderbeitraege.htm Sadly all in German and related to GDR 8/16bit computers - but some really impressive rescue/restauration actions there. Personally I've found nothing during UrbEx so far, but then again I've only been to …
Re: List of rarest PC soundcards
Posted on 2016-03-21, 18:57
Guys, this sh**t is really in the swing :) It might help surely help determine the rarity factor *as long as everybody takes it seriously and will upload true values/quantities etc* As long as it remains in this community, it's a highly selective impression it might represent at best. Also: this …
Re: List of rarest PC soundcards
Posted on 2016-03-21, 14:01
DynaSonix 3D http://i.imgur.com/WWpeVxz.jpg http://i.imgur.com/iqEb3mf.jpg I'd also strongly encourage removing the "average price" in that list ... it's random eBay prices, not average prices. I got my former IBM MFC for free (with MIDI breakout box) and the unused SoundScape Elite for 1€ The …
Page 28 of 57