Vintage Synth Repair

To: vintagesynthrepair@yahoogroups.com
From: brian@...
Date: Mon, 7 Apr 2008 07:27:07 +0100
Subject: RE: [vintagesynthrepair] Hammond H100

Wrong old son! ALL clocks are oiled with special clock oil, similarly watches are also oiled with special watch oil. You never ever run a clock dry it will ruin the pivot and the bush.

Regards

Brian G3OYU

www.g3oyu.co.uk

From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of timothy kosiorek
Sent: Sunday, 06 April 2008 20:02
To: vintagesynthrepair@yahoogroups.com
Subject: RE: [vintagesynthrepair] Hammond H100

Hello:I've used this only on Hammond preset keys and not on key contacts and I've used it for 30 years without any problems,if you take the preset keys section apart the contacts are sealed up so the WD-40 does not get on them,The purpose that WD-40 was made for is to mix with other lubricants to thin them down,Hammond uses grease on the preset mechanism that dries out and turns to a very sticky paste,any contact cleaner would completely remove the lubricant and cause the presets to lock up,I would never use WD-40 on anything else,but this is a mechanical problem on metal to metal parts not an electrical problem.I work on a dozen Hammonds a month mostly in Churchs and I don't get callbacks but do get return business from my customers for other problems not related to my repairs,for electrical contact problems I use Caig De-oxit which is recommended by most manufacturers tech departments.I understand not using WD on clocks,most clocks are designed to have dry contact and not have lubricant which can cause the parts to stick together.

Tim K.

direct link to my Ebay store.
http://www.sonicelectronicmusic.com

To: vintagesynthrepair@yahoogroups.com
From: brian@g3oyu.co.uk
Date: Sun, 6 Apr 2008 19:02:56 +0100
Subject: RE: [vintagesynthrepair] Hammond H100

Without doubt one of the worst things to do with any keyboard is to use WD40 on it. It is intended to be used on motor vehicles, around the ignition for instance. You can do untold damage with WD40 – we see this with clocks regularly and when one comes in for repair we double the service charge.

Recently I had a church organ to repair where the transpose keys and the preset tone keys had jammed up all due to the use of WD40 in the past.

So having said this, what should you use? The answer is simple use something designed to be used on electronic equipment, Electrolube, also known as contact cleaner. I don’t know what the name is in the USA but I’m sure you have similar products.

Regards

Brian G3OYU

www.g3oyu.co.uk

From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of timothy kosiorek
Sent: Sunday, 06 April 2008 18:54
To: vintagesynthrepair@yahoogroups..com
Subject: RE: [vintagesynthrepair] Hammond H100

I see this problem with a lot of Hammonds and I usually try to cure it without taking anything apart,the grease on the mechanism gets thick with age and keeps the bars under the keys from moving,the way I fix it is by squirting WD-40 beside the keys and pushing them up and down,use the little hose that comes with the WD-40 so you can shoot it all around the keys,the sticking mechanism is in the frontal part of the key,the WD-40 mixes with the grease and loosens it up,once you get the lock down bar to move go back and forth between the cancel key and the various preset keys,the volume should also return by rapidly moving the keys up and down because it usually is caused by dirty key contacts and the movement will clean the contacts,I've been fixing Hammonds this way for 30 years.only after trying this do I rarely have to get under the keys,if you have to get under them it is a bit of a project but only takes about an hour.
Regards
Tim K.

direct link to my Ebay store.
http://www.sonicelectronicmusic.com

> To: vintagesynthrepair@yahoogroups.com
> From: fsimon001@neo.rr.com
> Date: Sun, 6 Apr 2008 14:34:27 +0000
> Subject: [vintagesynthrepair] Hammond H100
>
> H-100
> My preset keys won't stay engauged. How do you disassemble to get
> underneath keys to fix. Also I have low volume if I hold them down
> manually.
> I know final tube outputs are good but not sure where the low signal
> is. Do I scope out from the tonewheel somewhere then at a pre-amp. Like
> I said I injected a tone into the final tube amps and have strong final
> stage.
>
>
>
> ------------------------------------
>;
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