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Are these parts compatible?

dastinger

dastinger

Member
Hey guys,

I have a Denon 3803 that needs a new PCB. The one that it needs is the 1U-3473-2 (page 46 on the service manual). Now, there's one from a Denon 2803, part number 1U-3486-2 available on eBay (page 41 on the service manual). They use the same chips and look exactly the same on the manual.

Now, would these be compatible? Would I simply be able to swap one for the other and it'd work?

Thanks!
 
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That board probably includes firmware that would be incompatible with your receiver. OTOH, if the item you found is the same as the one I found (current price $17.43) you're not risking much.
 
The one you found is different. The one I want is $24.43 and, even though that's still cheap, shipping and taxes to Europe makes it double so I'd need to be sure.

You're probably right though. There must be a difference. On the other hand, I still need to look at the inputs on my board to compare 100%. There might be a (not so) subtle difference that might help.

Thank you for your reply!
 
I believe the Winbond chip on that board is an EEPROM, specifically programmed for the receiver the board is designed to go into. While theoretically it could be reprogrammed with the correct firmware, there may be no way to do it once it's on the board, other than going through the reprogramming function in the menu, which you can't get to without the correct original firmware.
 
swechsler said:
I believe the Winbond chip on that board is an EEPROM, specifically programmed for the receiver the board is designed to go into. While theoretically it could be reprogrammed with the correct firmware, there may be no way to do it once it's on the board, other than going through the reprogramming function in the menu, which you can't get to without the correct original firmware.
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Sorry for such a late reply, but somehow I didn't see the notification for this post.

Do you think that swapping the chip from the original board to this one would suffice? Which one is the chip exactly?
 
If the firmware is the only difference (and that's a big if), and that chip on your board isn't defective, then it could theoretically work. However, the equipment required to do this properly will probably cost more than the entire correct board. Modern electronics use SMT assembly methods; a regular soldering iron won't do the job.

ETA: actually, looking closer, as a pre-HDMI model, this receiver has very little value as it is. You might be better off just cutting your losses and replacing the entire thing.
 
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