23-04-2012, 10:16 PM
(23-04-2012, 09:45 PM)Skywave Wrote: I'm getting a bit confused.
YOU'RE confused; how do you think I feel and I've got it in front of me.
Connected to my external PSU the set is receiving 15.45V and works fairly well, albeit with the quiescent current too high - 12mA against the 4mA it should be. If I then switch to battery power it emits a raspberry-type noise though increasing the quiescent via the RV2 preset the gets rid of it.
Motor-boating starts when the volume is increased beyond about a quarter.
I'd thought about de-coupling myself but holding extra capacitors across the power input - either the battery terminals or the connection to the audio board - makes no difference.
When using the PSU I'm applying power via the battery connectors.
I'm starting to question the health of RV2 and intend looking if I've got another suitable one I can try in its place.
Thanks for your interest but I really AM packing it in for tonight. I'll try to post a more lucid report in the morning when I've had a sleep and can assess it anew with fresh eyes, and ears.
- Joe
