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          PSU Interference Hardware Fix 2

Recap:

  Certain PSU's or adjacent modules that have a lot of digital noise emission may cause low level noise in the Reflex LiveLoop
especially during Record operations when everything is on. As a result there will be a low
level whine or buzz. In most applications, this may go unnoticed, but it depends on PSU interference levels etc.

This mother board modification is in addition to the digital board modification shown  here, and will stop the RF from entering a critical
stage in the front end amplifiers.

1) You will need 2 * 22pF capacitors (SMD preferable, but through-hole is ok) 47pF works, but may infringe on higher frequencies.

2) Locate 8 pin chip U13

3) The capacitors most bridge R72, & R73. If using through-hole caps, it's OK to use or bridge to C40 & C3 as they are connected
    to that side of the two resistors.

This image shows SMD 22pF caps in place over the resistors

Newer Reflex's (S# 110+) look very different as they already have the caps on-board.

Reflex's from S# 003 to S#040 may not have these filters so it's worth it to check.

This modification will eradicate any remaining PSU / RF noise from the Reflex, and is recommended.

Happy Reflexing!

Sandy Sims

SDS Digital