Marantz pm 5005 Blown Left Channel?

[Rowan1981]

As the title suggests, it would appear that the left channel on my just over 1 year old pm5005 has blown...

When I place my ear very close to the left speaker there is still a very faint sound coming from the left channel.

I have been through basic troubleshooting steps to see if it was an issue with the left speaker by swapping the left speaker to the right channel which worked . Also changed over the speaker cables just in case that might have been the issue.

I guess there isn't any more troubleshooting steps that I can go through unless I open up the Amplifier? If it is a blown channel then would this be a cheap fix ? or is it something that I could possibly fix myself?

Thanks

P.S the Warranty has already exprired as it only came with 1 year. so sending it back to the store is not an option.

 

[Blacksabbath25]

As the title suggests, it would appear that the left channel on my just over 1 year old pm5005 has blown...

When I place my ear very close to the left speaker there is still a very faint sound coming from the left channel.

I have been through basic troubleshooting steps to see if it was an issue with the left speaker by swapping the left speaker to the right channel which worked . Also changed over the speaker cables just in case that might have been the issue.

I guess there isn't any more troubleshooting steps that I can go through unless I open up the Amplifier? If it is a blown channel then would this be a cheap fix ? or is it something that I could possibly fix myself?

Thanks

P.S the Warranty has already exprired as it only came with 1 year. so sending it back to the store is not an option.

so you change speaker to the bad channel and it worked have I got that correct ? If I am correct then I would say it’s the speaker not the amplifier that is the issue here .

but if I am wrong where did you buy the amplifier because I would take it back to the dealer to be fixed if you think it’s worth getting fixed as I am unsure what the charges would be to fix it if a channel that has gone but I would not recommend taking lid of to see if you can fix it as there only the amp fuse to change and that’s it .

 

[Rowan1981]

Hi Sorry if I was not clear. What I meant to say was I changed the left speaker from the channel that was not working to the right channel that is fine and the speaker was working on the right channel.

 

[Rowan1981]

As the title suggests, it would appear that the left channel on my just over 1 year old pm5005 has blown...

When I place my ear very close to the left speaker there is still a very faint sound coming from the left channel.

I have been through basic troubleshooting steps to see if it was an issue with the left speaker by swapping the left speaker to the right channel which worked . Also changed over the speaker cables just in case that might have been the issue.

I guess there isn't any more troubleshooting steps that I can go through unless I open up the Amplifier? If it is a blown channel then would this be a cheap fix ? or is it something that I could possibly fix myself?

Thanks

P.S the Warranty has already exprired as it only came with 1 year. so sending it back to the store is not an option.

so you change speaker to the bad channel and it worked have I got that correct ? If I am correct then I would say it’s the speaker not the amplifier that is the issue here .

but if I am wrong where did you buy the amplifier because I would take it back to the dealer to be fixed if you think it’s worth getting fixed as I am unsure what the charges would be to fix it if a channel that has gone but I would not recommend taking lid of to see if you can fix it as there only the amp fuse to change and that’s it .

I bought the amplifier here in Thailand where I currently live. seems that nearly all HiFi electonics and speakers all come with a one year Warranty which has now passed. I'm just trying to figure out how it could have happned and what are the chnaces of it being fixed without spending a huge ammount on it.

Pretty disapointed with Marantz considering the amplifier is only a bit over a year old and has been looked after well with no heavy use!

 

[Feral]

i had a similar issue with my current amp in that the left channel was barely audible. Does the channel kick in if you raise the volume at all to a reasonable level?

I fixed my issue using contact cleaner but if you are getting nothing then might be blown. Although you may not have heavy use Thailand can be humid so might be worth using contact cleaner to see if that makes any improvement and an inexpensive task before say going down the repair or replace route.

 

[Rowan1981]

i had a similar issue with my current amp in that the left channel was barely audible. Does the channel kick in if you raise the volume at all to a reasonable level?

I fixed my issue using contact cleaner but if you are getting nothing then might be blown. Although you may not have heavy use Thailand can be humid so might be worth using contact cleaner to see if that makes any improvement and an inexpensive task before say going down the repair or replace route.

Does the channel kick in if you raise the volume at all to a reasonable level? I will try that later on this evening and see if I notice a difference.

I fixed my issue using contact cleaner. Where exacly did you apply the contact cleaner?

Cheers

 

[Rowan1981]

i had a similar issue with my current amp in that the left channel was barely audible. Does the channel kick in if you raise the volume at all to a reasonable level?

I fixed my issue using contact cleaner but if you are getting nothing then might be blown. Although you may not have heavy use Thailand can be humid so might be worth using contact cleaner to see if that makes any improvement and an inexpensive task before say going down the repair or replace route.

Does the channel kick in if you raise the volume at all to a reasonable level? I will try that later on this evening and see if I notice a difference.

I fixed my issue using contact cleaner. Where exacly did you apply the contact cleaner?

Cheers

 

[Feral]

https://www.youtube.com/watch?v=kwDBWO0izQo

I focussed on the volume and balance controls although mine are mainly sealed so hard to get the cleaner in but worked for me.

 

[Tannoyed]

Hello

Is the sound from the faulty channel distorted or clean albeit very quiet. It seems unlikely that the output stage has blown if there is no distortion. Sounds like the pre-amp stages may be the problem. Does this amp have mechanical input selectors or does it use push buttons? Do those push buttons operate relays to do the switching (do you hear a clicking sound when selecting another input) e.g .as per Roksan.