Hi all.

So I bought a Marantz NR1605 A/V off of eBay "as-is". The description reads:

Marantz NR1605 AV Receiver As Is, no returns or guarantees Shipped with USPS Parcel Select Ground. This was a new receiver purchased in approximately early 2015. The receiver still turns on but I think during a power outage/surge something happened to the HDMI in/out capabilities. The receiver is included with the adapter, manual, and remote control

They are correct - it does come on but only for a few milliseconds before turning off. I bought it thinking that it probably would just be a blown fuse or something I could see a burnt component on the board that I could replace.

Opening it up I found a total of 4 fuses. Each fuse looked just fine. Nothing blown. Examining the board(s) inside they all seem clean and shinny/new looking. Nothing on the board(s) look burnt or leaking in any way.

However, I am unable to figure out what the steps are in order to take each PCB board out in order to see what beneath it - if there are any more fuses or check for something burnt/leak.

I have taken a good amount of pictures in order to let you see what I am seeing. Perhaps you would be able to spot something that I have not. Or better yet, let me know how to go about taking the PCB boards out. I also have 2 videos showing it coming on and then off and also what it looks like on the LED screen when it comes on.

https://www.dropbox.com/sh/lixs7eis9shw7x8/AAD00CL3a2469GNL3XZILdrRa?dl=0

 

Have you replaced the missing fuse that is shown on a photo?

Have you done any of the troubleshooting tips in the owners manual?

 

Yes sorry. I forgot to put that in before taking pictures. Its in. And there's no troubleshooting for this issue in the manual.

 

When you press the power on button, does the power led flash in green or white or red?

The service manual is out there on the web. You may have to join another site to get it though.

 

No lights show on the button.

 

Go to page 14 ......

 

Im not really seeing anything on that page that pertains to why there is no light on the power button? Now I am talking about the unit and not the remote. Which one were you talking of?

 

I would suspect something in the power supply has failed. I've seen many circuits that if the MCU doesn't see certain voltages during power up it will shut the system down. The standby supply for the MCU may be OK since the unit is trying to power up.
Without a schematic it's going to be pretty tough to troubleshoot.
Here's a link on Ebay you might check out.
https://www.ebay.com/itm/Marantz-NR1605-AV-Receiver-Service-Manual-and-Repair-Guide-/233083554300
SG

 

Was just looking at the second video! At 1:55 into the video you can see a crack in the PC board.
SG

 

Yes I already bought that to fix it once it got here.

 

Yes I already bought that to fix it once it got here.

All I can say then is to double check it and make sure there's nothing else broken or cracked.
SG

 

Wow I totally missed that! I knew it looked bent but not broken!

 

Was just looking at the second video! At 1:55 into the video you can see a crack in the PC board.
SG

What video? I can’t see a posted video.

 

What video? I can’t see a posted video.

Post 1 looks like on the LED screen
SG

 

What video? I can’t see a posted video.

 

what it looks like on the LED screen

Nevermind. I missed the links...

 

Just need some chewing gum here and it will all be fixed....

My guess would be that they tried to take this off but they didn't have all the screws out. They put pressure on the pcb trying to lift it up and boom... they forgot to remove the 2 knobs and take the nut off in order for it to come up.

 

My guess would be that they tried to take this off but they didn't have all the screws out.

Good lord! Big question then, why would they be trying to remove the board?
SG

 

Good lord! Big question then, why would they be trying to remove the board?
SG

im trying to find a part number but cant seem to make one out?

 

unless this is it here