Hi all,
I have a Harman Kardon receiver hk670 that has the left channel not working and burnt 2 of my speakers, unfortunately. I opened it up and found two resisters(R450 and R470) had brunt and replaced those. After I replaced them, I turned it on and R470 seemed to be ok? but R450 burnt right the way. So I thought there could be something that went in to the resister that went wrong, so I should find out and replace those too. Also, C418 seems to be shorted too, do i need to replace it or it is caused by something else?
I am very new to this and would love to hear if people here can give me some help.
Here are the photos and documents, I have the full schematic but the file seems too big to attach on here.
If we needed here, you can find it here:
https://elektrotanya.com/the_harman_kardon_hk670.pdf/download.html
Thank you so much.
Auguste
I have a Harman Kardon receiver hk670 that has the left channel not working and burnt 2 of my speakers, unfortunately. I opened it up and found two resisters(R450 and R470) had brunt and replaced those. After I replaced them, I turned it on and R470 seemed to be ok? but R450 burnt right the way. So I thought there could be something that went in to the resister that went wrong, so I should find out and replace those too. Also, C418 seems to be shorted too, do i need to replace it or it is caused by something else?
I am very new to this and would love to hear if people here can give me some help.
Here are the photos and documents, I have the full schematic but the file seems too big to attach on here.
If we needed here, you can find it here:
https://elektrotanya.com/the_harman_kardon_hk670.pdf/download.html
Thank you so much.
Auguste
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