Re: G08_105 deflection board?

Are schematics available for the G08-105? I have never seen any.

Dave
----- Original Message -----
From: "Hans O" <p1001@wideopenwest.com>
To: <vectorlist@vectorlist.org>
Sent: Saturday, December 02, 2006 12:20 PM
Subject: Re: VECTOR: G08_105 deflection board?

> Interesting question, Joe. A quick look and me thinks it's possible.
>
> High voltage unit; Appears to be almost identical. They moved the HV
> regulator onboard from the daughter board and simplified the 100v circuit
> with a TL783. (doesn't mean you'd have to) Some minor changes in cap and
> resistor values.
>
> Neck board; Appears identical also.
>
> Tube and yoke; Well, the tube is the same as Amplifone and 6400 but the
> yoke is not. Use an Amp tube and splice in the tube socket if it's
> different. I would try to use an Amplifone yoke.
>
> Deflection board; Here's the rub.
> The good: Power and low voltage side is identical. Same 45-0-45
> transformer. Signal input and error correction through the custom IC is a
> matter of some resistor and cap value changes.
> The bad: Deflection amp circuit has been re-engineered. Taking into
> consideration the "paddle boards", it's not a totally different circuit. I
> believe it to be different enough to make a hack very difficult. Consider
> an add on daughter board to replace that part of the circuit and
> incorporate the revisions that Electrohome made. The main deflection
> transistors are SDT1064.
>
> Did I miss anything? I have a pile of G08's for donors should you wish to
> try it out.
>
> Hans O
>
>
> Joe Magiera wrote:
>> Has anyone ever done a comparison of a G08_105 deflection board to a
>> regular G08_003 deflection board? Is it something that an _003 could be
>> mod-ed to a_105? I’ve never seen a _105 deflection, so I have no idea
>> how crazy that could be.
>>
>> I know there is something about putting a G08_003 in a Cosmic Chasm, but
>> if I could get a G08_105, that would obviously be preferred. Thanks,
>>
>> Joe
>>
>> joemagiera@ameritech.net
>>
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Received on Sun Dec 3 12:27:45 2006