Re: 465B recapping and tantalum caps


On Sat, Oct 23, 2021 at 10:12 AM, pdxareaid wrote:

On Sat, Oct 23, 2021 at 10:00 AM, pdxareaid wrote:

"The mysterious cap you mention is a 50 ohm thermistor in parallel with the
ohm resistor."

thanks Mark. I have seen no documentation of that thermistor. How do you
this? Where can i look? Did i just miss something simple?
Ahhh...i see it now in the circuit diagram. it is just not depicted on the A4
board for some reason. Thanks.

It is RT4373, on A4 board diagram it is shown to the left of R4373 trimpot. In your picture if you look at the same location there are two empty solder islands, instead the thermistor is in the "mystery component" location. Tracing connection in the picture shows it is parallel to R4374 (27-ohm) which matches the schematic. It looks like there are two alternate locations for the thermistor.


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