Source for replacement caps in H744 regulators

[Jon Elson]

On 1/6/22 6:04 PM, Matt Burke via cctalk wrote:
>
> Quiet regulator: http://www.9track.net/posts/h744/h744_ba11_q2e.png
> Noisy regulator: http://www.9track.net/posts/h744/h744_ts11_q2e.png
>
> The yellow trace is the emitter of Q2 (input of L1) and the cyan trace
> is the output of L1. Q2 seems to be switching partly on then fully on in
> the noisy regulator. it should of course be fully on or fully off as
> seen on the quiet regulator. Also the switching frequency seems to be lower.
>
Yes, the 2nd unit is running at 5 KHz, clearly explaining 
the noise.  Possibly there is a bad flyback diode, or 
something causing the different waveform.

Jon