alternative for STK3102-IV

[jitter]

The STK3102-IV is one of the biggest weak spots of some Marantz amps, like the PM80(SE). I had to replace the one in mine once but I was wondering if someone has ever come up with an alternative.

Does anyone know if such an alternative exists? E.g. a replacement made up of discrete components?

[djk]

http://www.datasheetcatalog.org/data...yo/STK3122.pdf

We can use a higher voltage version, or build a surface mount hybrid (as Crest does).

[jitter]

Thank you for the link, but that was not exectly what I meant. I was more thinking along the lines of a discrete component replacement that doesn't go wrong like the STK-modules do when they age.

[djk]

Surface mount parts are discrete, and everything eventually dies.

You can build any design you want with surface mount versions of 2N5551/5400 and MJE 340/350 and make it small enough to fit.

Crest uses a module they build in their v1500 that will drop right in, don't know what it costs.

[jaycee]

The hard thing to figure out will be the specifics of the original - such as what was the original LTP current, what was the original VAS current... the circuit itself wouldn't be hard to implement.