A nice Italian one i got pretty cheap. But then: Two notes were no go. Crap!
Good thing: The schematics were included. I believe the date of purchase was 1971. Anyway, that made things way easier.
First step: Get out those damn oscillator cards. This sucks, because you have to un-solder 7 wires for each card. And 3 of them are almost unreachable. Un-soldering is not so much the problem here.. But soldering the stuff back on surely is!
Anyway, i un-soldered the two bad cards, cleaned their back with 99% iso alcohol and properly re-soldered them. And: Tataaa: They are working.
I thought the vinyl cover of the wooden top looks just disgusting, so i started removing it so i could paint it.
(to be continued)
Dienstag, 1. Dezember 2009
HOHNER SYMPHONIC 30 ** Repairs
WELTMEISTER TO 10 ** Repairs
I recently bought a WELTMEISTER TO 10 (German Democratic Republic) which was a real mess. Keys totally bent, fuse gone, fuse lid gone, interior parts missing all the way.
First thing i wanted to fix were the keys. They could be pressed but came up way too high. Unscrewing the case showed that this was an easy fix: All the faulty keys had their ends (which hold them down) badly bent. At first i tried un-screwing every key and then re-bnding it, but that's too tricky. Found an easier way: Just pull the bad key waaaay up. The bent end should be visible now. Take a big screwdriver or something similar to re-bend the ends of the keys. Bend them over the top, so the key can slide back into its place properly. Now take a look at the whole thing from downside: The end is overbent. But that's no problem, just bend it into place, like you can see in the pick.
Missing key contact wires:
I already wanted to trash the whole thing when i saw that like 15 key contact wires were missing. But sometimes you just get lucky: When shaking the organ, nearly all the missing parts (ca. 30) came tumbling out. What a surprise! Among them were most of the wires! Yippee!
Check the pic to see the missing wires from the downside.
Replacing those bastards can be a little tricky. Have two screwdrivers ready. The pic should give you an idea how they should be placed.
First thing i wanted to fix were the keys. They could be pressed but came up way too high. Unscrewing the case showed that this was an easy fix: All the faulty keys had their ends (which hold them down) badly bent. At first i tried un-screwing every key and then re-bnding it, but that's too tricky. Found an easier way: Just pull the bad key waaaay up. The bent end should be visible now. Take a big screwdriver or something similar to re-bend the ends of the keys. Bend them over the top, so the key can slide back into its place properly. Now take a look at the whole thing from downside: The end is overbent. But that's no problem, just bend it into place, like you can see in the pick.
Missing key contact wires:
I already wanted to trash the whole thing when i saw that like 15 key contact wires were missing. But sometimes you just get lucky: When shaking the organ, nearly all the missing parts (ca. 30) came tumbling out. What a surprise! Among them were most of the wires! Yippee!
Check the pic to see the missing wires from the downside.
Replacing those bastards can be a little tricky. Have two screwdrivers ready. The pic should give you an idea how they should be placed.
FARFISA COMPACT Vibrato Fix (1)
This is just a quick one... I don't have any diagram or schemes for the Compact, so i found this out only by coincidence. Vibrato was dead so I unsoldered and re-soldered a few things and - bingo - found the relevant thing:
(click on the pic to enlarge)
Check the circled spot. Is the red wire loose? Re-solder it! If it's not, try unsoldering and then re-soldering.
(click on the pic to enlarge)
Check the circled spot. Is the red wire loose? Re-solder it! If it's not, try unsoldering and then re-soldering.
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