[sdiy] Lexicon Delta-T 102 schematics?

[mark verbos]

Tom,

I don't have any experience with that one, but I fixed a broken Delta-T 91 last year. I think they are from the same family, so could be quite similar. In fact, I couldn't find a schematic for this thing, so I referred to a schem from a Prime Time 93. The delay itself was the same, just the mixing, routing, modulation was different (well missing) on this one. To my horror the problem was a dead DS3672N which is a super rare driver for the RAM. I got the thing working with some kind of CMOS buffer, but then hunted down the right part just to be completist. Best of luck!

Mark




On Feb 16, 2016, at 4:21 PM, Tom Bugs wrote:

> Hi,
> 
> Wondering if anyone happens to have any documentation for the old Lexicon Delta-T 102 Stereo Delay System.
> There's a 4 page doc floating around but that only covers some strange options or something - not the important nitty gritty.
> 
> In particular a PSU Schematic would be helpful - mine has been attacked sometime before and I won't even consider moving on to the module boards until I've sorted this..
> (there's a missing TIP33, for example - well, I presume TIP33 as there's a still populated TIP34 next to it.. Bloody massive capacitors on the PSU!)
> 
> Then there'll be tant-cap replacing on all the sub-boards - I've got 4xOM102-S and 1xVCO102 + the core boards.
> 
> [as an aside - last year I got a Primetime92 off Vemia - the service manuals for that were *supreme* such detail and great engineering. And it turned out to be a relatively easy repair - it was the dreaded tants causing issues - replaced them and all started behaving nicely again]
> 
> Any help very gratefully appreciated.
> Tom
> 
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