Search found 6 matches

by Bunk
Thu Jun 18, 2015 8:11 pm
Forum: HELP!
Topic: Synthex dead osc1 on voicecard
Replies: 3
Views: 485

Re: Synthex dead osc1 on voicecard

If you have a schematic (or even if you don't) a good place to start would be the DC rails on the card itself then +ve and -ve at all the IC's. After that check you have the correct CV's in the correct places. If thats okay try working backwards through the voice card with a scope or signal tracer. ...
by Bunk
Thu Jun 18, 2015 2:31 pm
Forum: HELP!
Topic: Crumar Trilogy + Casio VZ1
Replies: 1
Views: 627

Re: Crumar Trilogy + Casio VZ1

"not holding the TDA1008 on" I'm a bit confused! :?: The TDA1008's are divider IC's that are fed with square waves from the two TOS chips so they are always 'on'. Might be worth checking the 4016 Quad Bilateral Switches such as IC6.7.8 etc. I think these gate the square waves and if one is dead it w...
by Bunk
Thu Jun 18, 2015 2:18 pm
Forum: HELP!
Topic: CEM 3328 - Crumar Bit 99
Replies: 12
Views: 3014

Re: CEM 3328 - Crumar Bit 99

As mentioned earlier check the caps in each voice as they do go bad. Another good tip is to check the Freq and Res CV in's on the 3328. get hold of a pinout for the 3328 and test each voice with the chip in circuit. Write down the voltage values for each voice in turn with the filter wide open then ...
by Bunk
Thu Mar 12, 2015 6:11 pm
Forum: Buyer's Guide
Topic: Help a brother choose his first synth
Replies: 12
Views: 5667

Re: Help a brother choose his first synth

I might be going out on a limb here and I don't know what prices are like where you are but have you considered an older board? There are some real gems out there on the secondhand market. Take the Korg Z1 for example. Tons of bang for your buck and several types of synthesis engine. If you want pol...
by Bunk
Thu Mar 12, 2015 4:12 pm
Forum: Buyer's Guide
Topic: Ridiculous eBay 'Buy-it-now' and starting bids.
Replies: 1362
Views: 254772

Re: Ridiculous eBay 'Buy-it-now' and starting bids.

By comparison I guess this is a 'bargain'? A truly woeful synth, crying out for an OS upgrade (which hasn't been carried out on this example). The seller even compares it to a Juno 60 for some unknown reason? Maybe because it says 'Roland' on it?? It looks like the same seller has a BIN on the PG pr...
by Bunk
Thu Mar 12, 2015 4:06 pm
Forum: Buyer's Guide
Topic: Ridiculous eBay 'Buy-it-now' and starting bids.
Replies: 1362
Views: 254772

Re: Ridiculous eBay 'Buy-it-now' and starting bids.

Now I know the CS80 is an iconic synth but £18,500? Really??

http://www.ebay.co.uk/itm/Yamaha-CS80-v ... 20f814fc04