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i hate to ask but I Really Need Help

I recently purchased a plinius 8200 and i am having a serious hum problem, not the kind that is bearable when the music is on, something is not right. To get to the point i am going to list all the facts that may be relevant and what i have done so far.
-i live in the south in a house that is 60 to 80 years old, i do not know anything about the wiring, i rent so any improvements to the system are out of the question.
-i switched the old two prong outlet to a three prong, i connected what appeared to be ground wires but i do not know if the are truly grounded.
-i have tried three sets of interconnects, different speaker cables, using cheater plugs, a RGPC 400, a PS ultimate oulet and different power cords in a number of different combinations to try and solve the problem which i have been sucessful in dealing with in past apartments.
-occasionally when trying different connection combos i have powered on the system and the hum is gone but if i change the volume by touching it sometimes comes back, sometimes it comes back with out being touched.
-HELP! i am completely unable to use my system at this time
i will try to promptly answer any questions that may help
mkaes
swampwalker's avatar
swampwalker
5,138 posts
 
Well it sounds like there is a ground loop btwn cdp and amp. Try grounding the cdp chassis to a true ground or to the amp and then to a true ground.
jdombrow
371 posts
 
It sounds like there is a short circuit somewhere, or something groundng in the signal chain that shouldn't be. Are any of the RCA connectors loose? Can they be turned in the chassis? Has the volume control pot rotated from it's normal (mounted) position so that one of the lugs is touching something? If you're comfortable with working inside the units, use a non-metal stick to gently touch items in the audio signal chain (not the AC circuitry) to see if you can locate the problem. Otherwise, take it to a technician.
peter_s
1,313 posts
 
Try making sure everything is plugged into the same outlet (use a power strip if necessary) and see if it goes away then. If it goes away, there is a differential b/t the two outlets.
dweller's avatar
dweller
3,735 posts
 
This subject has been discussed ad nauseam and is easily review in the archives.
The usual culprit is a cable TV connection.
Disconnect anything cable-related and see if the hum goes away.
If this is the cause, you must purchase an isolation transformer or try to convice your cable provider to fix it.
mkaes OP
53 posts
 
Dweller-i have tried many of the recommendations found in the archives, as mentioned i have dealt with this problem in the past, in this apartment i not only do not have cable i do not a have a tv anywhere near my system, which is the first or second outlet from the fuse box, i have tried different interconnect, cheater plugs and several other things mentioned in other post, I will try grounding the cd player to the amp, i have checked both my ac plugs and interconnects, if i do not fix it soon i will take the amp to a tech
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