Re: Tektronix 222 mini scope repair, looking for schematics

Dave Voorhis

On 21 Oct 2019, at 10:23, Miguel Work <harrimansat@...> wrote:

I ┬┤have complete service manual for 222 and 222A. Is more easy to modify scope charger circuit to charge lithium battery. All my old NI-CD gadgets, like my THS730, TEK 222, 221, 213, 214, now are working with lithium batteries with minimum modifications.
What were your modifications?

BTW, at least the 222 was originally lead-acid gel, not NiCad.

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