Volume increasing and decreasing on preamp


I have an old B&K Reference 5 S2 preamp. I don't use the remote controller, lost it. One time my preamp increased it's volume from around -22dB to -8dB and I stopped it before it got any louder. On a Computer Audiophile forum I was told there is somany stray IR beams going around it could have been that. That was about a few weeks ago. Today it did just the opposite and went from -24dB to -40 dB. I running my music thru a MakBookPro 2013 with an ifi nano DAC using Audirvana_Plus in place of iTunes. I leave the volume control on it to almost max.I I bought the orca caps and used them on unused rca plugin on pre amp would the remedy the issue?
jamesroyb
Your lost remote is in your chair. Once in a while you sit just right...or wrong...
Sounds like stray IR signals. Could be from any number of
sources.

You could try a "Factory Reset". From the manual:

Sometimes a factory reset is necessary in order to clear
problematic symptoms sometimes experienced in the
field.

A factory reset will clear all system settings, and all
presets. A factory reset will also clear any information
backed up onto the EEPROM that may have been
accomplished by a Memory Backup.

Simultaneously press and release the ON/STANDBY,
DOWN and LEVEL buttons. Once you see "Format
Filesys" on the front panel you can release the buttons.

A Factory Reset will erase the memory backup.
FACTORY RESET will take approximately 60 seconds to
execute

There is also a way to do an "IR LOCK". Since you're not
using the remote, I'd lock the IR sensor. The manual says
the procedure is under the Advanced Security Menu.