Re: Trying to fix a Marantz SR-2000 receiver
<trousky1@xxxxxxxxxxxx> wrote in message
news:7h2n02p9tp55ea4untpl25odspkp4as056@xxxxxxxxxx
Hi all,
I am trying to fix this receiver, I replaced the hybrid STK080G
power amp for the right channel, after having checked the voltages on
the pins. Now this power amp goes red hot when powered on.
Any ideas what/how to check ?
The driver ... the circuit that feeds the hybrid.
.
Relevant Pages
- Re: Trying to fix a Marantz SR-2000 receiver
... I swapped the input to the hybrid power amps ... and right channels) and I still have the same power amp getting very ... If the sound is good, but the hybrid is frying, then I would suggest ... parasitic oscillation of a stage which may be, but is often not, ...
(sci.electronics.repair) - Re: Trying to fix a Marantz SR-2000 receiver
... I swapped the input to the hybrid power amps (left ... and right channels) and I still have the same power amp getting very ... Your assumption of its meaning Jak, ... It is a parasitic oscillation of a stage which may be, but is often not, detrimental to the basic operation of that stage. ...
(sci.electronics.repair) - Re: Trying to fix a Marantz SR-2000 receiver
... The sound is good on both speakers but I cant leave it ... I swapped the input to the hybrid power amps (left ... and right channels) and I still have the same power amp getting very ... solution--you refer to high-frequency oscillation. ...
(sci.electronics.repair) - Re: Trying to fix a Marantz SR-2000 receiver
... that pin 5 of the hybrid was floating (not ... channel but not by much). ... and right channels) and I still have the same power amp getting very ... hybrid, or an open or high ESR supply decoupling cap, and this is allowing ...
(sci.electronics.repair) - Re: Trying to fix a Marantz SR-2000 receiver
... I swapped the input to the hybrid power amps (left ... and right channels) and I still have the same power amp getting very ... If the sound is good, but the hybrid is frying, then I would suggest that it is hooting, maybe as high as RF. ... Alternatively, there may be a defective decoupling cap on one of the bypass pins of the hybrid, or an open or high ESR supply decoupling cap, and this is allowing it to hoot, which may be what caused the demise of the original hybrid, and would ultimately do the same to the replacement, if left. ...
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