I was born on Friday the 13th. The amp cleaned up and quieted down nicely with the new caps and the bass was more full and round, but it was still noisy with reverb on so I probed further. I ended up replacing some plate load resistors and did much head scratching. I isolated the reverb transformer and its secondaries, then measured each to the center tap, brown/209 ohms and blue/279 ohms, so I swapped in a better unit measuring 229/245 ohms. These two actions cured the issue. I played it for 5 days with no problems,until tonite when I reinstalled it,sounded wonderful, then POP......! Reverb now MIA,except for some noise,and the return works when touching the springs, but with reverb off still good,nice and quiet. Should I give up or purchase a large hammer?
On Sat, Feb 22, 2020 at 12:09, j f
<keysnleslie122@...> wrote:
Thank you Scott,
The kit arrived and I will perform the surgery later today, and report back.
Regards,
?John
On Mon, Feb 17, 2020 at 0:30, Scott Hawthorn
<organfreak@...> wrote:
Replace the caps with the kit from Tonewheel General Hospital.
On 2/16/2020 9:20 PM, john
alluneedtoknow via Groups.Io wrote:
Gentlemen,
I am hoping someone can shed some light on my issues, the primary
one being distortion and some "frying egg" noise. The distortion
is more pronounced on lower notes especially with multiple notes
played together. This occurs only when reverb is on. All tubes are
fine as tested in another PR 40 and I replaced the RCA cable from
necklace to amp. Two other minor issues, the reverb is switchable
using the chorale/tremolo switch. The console is outfitted with
the Trek II SS1 preamp if I remember the model correctly, the Trek
folks asked me some questions then said it was a very early model,
and lastly, the bass isn't as strong as on my other PR 40.
Tomorrow, with assistance I will try to confirm both 15"s are
working. In summary the unit plays clean with reverb off but gets
ugly when the reverb is on.
Thank You one and all,
?John
