Gretsch playboy amp vibrato problem

[lordhoho]

i have a gretsch playboy amp
the vibrato makes a rhymthic sound which increase with a change in speed
it sounds like a heart beat
it is audible at mid intensity and gains speed as the speed is increase

what might cause this and a possible repair idea

thanks

[52 Bill]

i have a gretsch playboy amp

Is this a vintage amp or one of the new Victoria made units?

[lordhoho]

gretsch playboy

hi

thanks for response
unfortunately it is a new victoria model
what do you think is causing that noise

lordhoho

[52 Bill]

what do you think is causing that noise

Based on the schematic, the tremolo oscillator modulates the bias to the first pre-amp tube, instead of to the power tubes.

I'd first try changing V1, the pre-amp tube and/or V2 the tremolo tube.

[lordhoho]

gretsch playboy

ok thanks will try that

[TD_Madden]

if nothing else works, it IS still under warranty, right?

[lordhoho]

gretsch playboy

no i bought it used