ELzekio
Active Member
Hello everyone
I am taking a look at this Yamaha HTR 7065 AV receiver for a friend that apparently has no sound.
Upon further inspection, I have noticed that if you have the “Pure Direct” button turned on we will get good clear sound out of the speakers and headphone, but as soon as you turn the Pure direct button off, we get absolutely nothing even if you crank the volume you won’t even get any sort of faint static noise or sound.
When I power the unit up, I notice the relay on the power supply clicks on as it should, then I hear another relay click right after that, but it seems as soon as the second relay click on, it clicks back off.
So in total there are 3 clicks I hear the second the unit is powered on: the power supply relay, a second relay that I believe is on the amplifier board, and that same relay clicking back off as soon as it is clicked on. About 4 seconds after that I hear a final relay click on. It feels like this relay is on the speaker output board but it is hard to tell.
I’m thinking most likely there is a bad connection that is making the unit not want to engage a relay. From watching this video linked below I am concerned it is this chip that is causing the problems. I don’t yet have a proper heat gun to test this, but are there any other ways I can conform or rule out that this chip is the problem? Suppose I could buy a heat gun if I really have to.
Biggest thing with this unit is it looks to be a nightmare to work on. There is no removable panel on the bottom to inspect the joints in the amp board, so if the issue is down on the bottom, I’m going to have to take out every layer on top of it as well as the heat sink which won’t be fun.
Here is a link to the owners manual, I’m unable to find a service manual as of yet.
https://usa.yamaha.com/files/download/other_assets/8/327928/HTR-7065_Manual.pdf
I am taking a look at this Yamaha HTR 7065 AV receiver for a friend that apparently has no sound.
Upon further inspection, I have noticed that if you have the “Pure Direct” button turned on we will get good clear sound out of the speakers and headphone, but as soon as you turn the Pure direct button off, we get absolutely nothing even if you crank the volume you won’t even get any sort of faint static noise or sound.
When I power the unit up, I notice the relay on the power supply clicks on as it should, then I hear another relay click right after that, but it seems as soon as the second relay click on, it clicks back off.
So in total there are 3 clicks I hear the second the unit is powered on: the power supply relay, a second relay that I believe is on the amplifier board, and that same relay clicking back off as soon as it is clicked on. About 4 seconds after that I hear a final relay click on. It feels like this relay is on the speaker output board but it is hard to tell.
I’m thinking most likely there is a bad connection that is making the unit not want to engage a relay. From watching this video linked below I am concerned it is this chip that is causing the problems. I don’t yet have a proper heat gun to test this, but are there any other ways I can conform or rule out that this chip is the problem? Suppose I could buy a heat gun if I really have to.
Biggest thing with this unit is it looks to be a nightmare to work on. There is no removable panel on the bottom to inspect the joints in the amp board, so if the issue is down on the bottom, I’m going to have to take out every layer on top of it as well as the heat sink which won’t be fun.
Here is a link to the owners manual, I’m unable to find a service manual as of yet.
https://usa.yamaha.com/files/download/other_assets/8/327928/HTR-7065_Manual.pdf
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