My Lazarus Cascade Basic preamp needs some TLC. Anyone have any insights about rebuilding one?
What schematics did you use?
TIA!
.
What schematics did you use?
TIA!
.
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In case anyone else finds themselves in the same boat, I'm posting an update. My Lazarus Cascade Basic was starting to distort when it warmed up. I never did come across a schematic, but forged on anyway. The resistors showed lots of signs of heat and age, so I replaced all the caps and resistors in the power supply, and replaced the poly caps in the phono and output stages. The foils lift pretty easily, so you have to be gentle, but it's a very doable task...if a foil lifts or gets damaged, you can always hardwire the component somewhere else along the path (BTDT).
Now my Laz works as it should and the magic is back. I hope it holds up for another 25 years.
It's worth noting that I needed to double up on some of the audio caps to get the needed values using those particular caps, so there's more caps in there than there was originally. Easy enough to avoid by purchasing exact values.
Now my Laz works as it should and the magic is back. I hope it holds up for another 25 years.
It's worth noting that I needed to double up on some of the audio caps to get the needed values using those particular caps, so there's more caps in there than there was originally. Easy enough to avoid by purchasing exact values.
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