I have a Rockola Bubbler (orange amp and computer), 6-7 years old, that worked perfectly until last year when it blew the power supply pcb and a power amp after I switched it off and then on again.
Cutting a long story short I have replaced the 58270-1A power supply pcb, and the entire amplifier i.e. 59132-1A preamp and 2 x 58440-A power amp boards. Despite this I have a fault on the Jukebox that I cannot understand nor correct.
When playing a cd I hear a distortion/fuzz in the background more noticeable on quiet pasages of music and also an intermittent popping/low boom noise from the speakers. The latter sound is if an electronic component is periodically/sporadically cutting in and out causing a low frequency boom from the speakers.
The cd mechanism is ground strapped and I have checked all the ground straps -all are tightly connected.
I have also connected the cd player to an external amp and it plays perfectly i.e. no problem with cd output.
The sound distortion/fuzz is not present on the BMG input when playing an ipod. In fact the ipod music played throught the BMG (aux) input has no background noise at all.
If I play the ipod thru the cd input then there is a very slight distortion/fuzz on the ipod generated music but nothing like when the the cd player itself is connected.
Given the ipod has 'perfect' sound when played thru the BMG (aux) input I have completely ruled out speaker problem.
The problems described do not render the jukebox unlistenable but it does not have the sound clarity it used to have and the intermittent popping noise is a constant reminder of an undiagnosed fault.
Cutting a long story short I have replaced the 58270-1A power supply pcb, and the entire amplifier i.e. 59132-1A preamp and 2 x 58440-A power amp boards. Despite this I have a fault on the Jukebox that I cannot understand nor correct.
When playing a cd I hear a distortion/fuzz in the background more noticeable on quiet pasages of music and also an intermittent popping/low boom noise from the speakers. The latter sound is if an electronic component is periodically/sporadically cutting in and out causing a low frequency boom from the speakers.
The cd mechanism is ground strapped and I have checked all the ground straps -all are tightly connected.
I have also connected the cd player to an external amp and it plays perfectly i.e. no problem with cd output.
The sound distortion/fuzz is not present on the BMG input when playing an ipod. In fact the ipod music played throught the BMG (aux) input has no background noise at all.
If I play the ipod thru the cd input then there is a very slight distortion/fuzz on the ipod generated music but nothing like when the the cd player itself is connected.
Given the ipod has 'perfect' sound when played thru the BMG (aux) input I have completely ruled out speaker problem.
The problems described do not render the jukebox unlistenable but it does not have the sound clarity it used to have and the intermittent popping noise is a constant reminder of an undiagnosed fault.