Dynaco ST-70 PC-3 driver board parts layout - photo ...
Bob Latino at 17h43
04
Nov
2009
Dynaco ST-70 PC-3 driver board parts layout - photo ...
Dynaco never gave a parts layout on their PC-3 driver board for the ST-70. They also never listed the parts that were on the driver board in the main parts list for the amp on page 11 of the ST-70 assembly manual. All they said in the parts list on page 11 was that you got a "Printed Circuit Assembly - PC-3 part #557003". When you got your ST-70 kit the d
Dynaco never gave a parts layout on their PC-3 driver board for the ST-70. They also never listed the parts that were on the driver board in the main parts list for the amp on page 11 of the ST-70 assembly manual. All they said in the parts list on page 11 was that you got a "Printed Circuit Assembly - PC-3 part #557003". When you got your ST-70 kit the d
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As with the ST-70, Dynaco never listed what parts were on the PC-1 driver board of the Mark III (or the Mark II for that matter which uses the same driver board.) The photo below is of a replacement driver board for the Mark III which shows the location o
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Dynaco did make an effort to upgrade the cheap brown phenolic board on the ST-70 in the early 1970's by replacing the "brown board" with a much more durable and heat resistant pale yellow fiberglass board. It still had open solder traces but for
Hi Bob:
I am curious to know what you think of the new octal boards Roy has introduced as an option in the ST-120 format.
Would these boards be electronically equal to or have any advantages or disadvantages in the ST-120?
I like the look of the octal
Well,
here's the driver board I built the other night. It went pretty smooth, a little over 2 hours:
Jason
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04/11/2009 at 17h43 by "Bob Latino"
