elka rhapsody 490 schematic?
2008-02-02 by george
anyone? sounds great,but every once in awhile it cuts out on me.
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elka rhapsody 490 schematic?
Re: [vintagesynthrepair] elka rhapsody 490 schematic?
2008-02-02 by scott frye
elka . pretty old I imagine.
Get someone ( if you cant) to reflow solder the power supply PCB and any places on the output PCB that dont "look fresh"
When it "cuts out" , does the whole thing not work?
george wrote:
Get someone ( if you cant) to reflow solder the power supply PCB and any places on the output PCB that dont "look fresh"
When it "cuts out" , does the whole thing not work?
george wrote:
Show quoted textHide quoted text
anyone?
sounds great,but every once in awhile it cuts out on me.
Scott Frye
AudioFixation
Consumer / Pro Audio Repair
Southern VT
AudioFixation
Consumer / Pro Audio Repair
Southern VT
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Re: elka rhapsody 490 schematic?
2008-02-02 by duncan
I have a 490 too- I think the biggest problem with these things is the crappy slider potentiometers in the control panel; I suspect that y'r problem may be in that area. mine's ok at the moment, but a crumar performer of similar vintage (& isn't there some family connection between elka & crumar? weren't the founders brothers or something?) has had to have all of it's sliders replaced because they were going crackly or open-circuit. it would usually be something like this on these machines- they're not especially complicated circuits, & are reasonably robustly constructed. duncan/r.m.i.
Re: [vintagesynthrepair] Re: elka rhapsody 490 schematic?
2008-02-02 by scott frye
Spray some "De-oxit" or "de-oxit" gold down into the sliders on the synthe.
You can buy some overpriced at radio shack or some less $ at parts express.
duncan wrote:
You can buy some overpriced at radio shack or some less $ at parts express.
duncan wrote:
Show quoted textHide quoted text
I have a 490 too- I think the biggest problem with these things is the
crappy slider potentiometers in the control panel; I suspect that y'r
problem may be in that area. mine's ok at the moment, but a crumar
performer of similar vintage (& isn't there some family connection
between elka & crumar? weren't the founders brothers or something?)
has had to have all of it's sliders replaced because they were going
crackly or open-circuit.
it would usually be something like this on these machines- they're not
especially complicated circuits, & are reasonably robustly constructed.
duncan/r.m.i.
Scott Frye
AudioFixation
Consumer / Pro Audio Repair
Southern VT
AudioFixation
Consumer / Pro Audio Repair
Southern VT
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Re: elka rhapsody 490 schematic?
2008-02-02 by george
OK,i'll start with the sliders,they DO need cleaning.
Re: [vintagesynthrepair] Re: elka rhapsody 490 schematic?
2008-02-02 by scott frye
Groovy!
george wrote:
george wrote:
OK,i'll start with the sliders,they DO need cleaning.
Scott Frye
AudioFixation
Consumer / Pro Audio Repair
Southern VT
AudioFixation
Consumer / Pro Audio Repair
Southern VT
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