Help please MC 323 R10 overheating

[Mark_III]

Hi,

R10, the 470R between emitter of Q3 and 15R to ground on the 323 MC board issue 2 is overheating on both MC boards (unmodified).

the circuit board is brown and the top layer on one R is flaking off - I am a bit surprised given this is a low power stage (in preamp).

is this an issue or concern?

thanks,
Mark

 

[colasblue]

Yes that one does run hot. It's actually only just within its .5W rating.

If it bothers you then you can change it for a higher wattage one, but a bit of discolouration isn't anything to worry about.

 

[Mark_III]

thanks for that information.

I might up the W when I change the caps and split/dual-power supply.