Saturday, August 28, 2010
Vermona ER-9 first test
YouTube via MusicMiK | August 28, 2010
"I recently got this ER-9 from an internet auction as broken - a resistor and a capacitor were fried according to the seller.
The schematics don't include the power supply, so if anyone also worked on this unit, could you please tell me the value of the resistor between the +12V and the +5V outputs? 82 Ohms seem to be a bit small, as the power transistor and resistor produce a lot of heat, 100 Ohms seem to be a bit too large as the 5V drops with this...
Besides the power supply, all D126D (7426) had some broken outputs each, so i replaced all of them. 2 Trimpots had some mechanical damage, besides this, the electronics were okay, just the electromechanical parts (start switch, volume knob, lamps) need some more work.
This machine has an interesting sound, i especially like the snare drum. There are lots of trimpots in the unit to tweak the sound and i don't have the adjustment documentation yet, so what you hear doesn't necessarily reflect the original sound of this machine, it's just what i adjusted."
PREVIOUS PAGE
NEXT PAGE
HOME
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment
To reduce spam, comments for posts older than one week are not displayed until approved, usually same day. Do not insult people. For items for sale, do not ask if it is still available. Check the auction link and search for the item. Auctions are from various sellers and expire over time. Posts remain for the pics and historical purposes. This site is meant to be a daily snapshot of some of what was out there in the world of synths.