Just joined the community...Looking to see if I can get some help on what to do with my 4310CI. We had a pretty bad lightning storm and the next day two of my receivers would not transmit the HDMI signal.(4310&3808) Both receivers "work" when connected through the component video/audio, just no HDMI. Note: nothing was connected to component input/output during the storm. I dropped them off at a local electronics repair shop and he said that they are not repairable. Are replacement HDMI cards available? Would it be worth a try? Thanks for the advice!
Welcome. Sorry to hear that. First off, I'd do a reset the microprocessor procedure (see the OM, listed in the index) on each. Make sure the front panel display flashes. If once doesn't fix it, repeat it several times-you have nothing to lose doing this.
Assuming the reset procedure doesn't work and the boards are fried, here's how I'd look at it. The boards are hundreds of $. I would not spend that kind of $ repairing the 4310 bec of poor model reliability (liklihood of NIC failure) and its lack of the far improved Audyssey MultEQXT32. Though the 3808 was reliable and amazing for its time there's quite a few improvements since then in Audyssey (XT32, DSX wides/heights-does yours even have the Dyn EQ update?) and probably other features you may like as well. Plus the unit itself is older and has been stressed so it's at risk of other failures.
If I were you I'd call jdsmoothie as he knows all about Denons, gives unbiased very informed advice and is now with AVS sales! Tell him your objectives with each system and he'll advise you as to the best value model:
For ex., for under $1K you can get a Denon X4000 with all the new features and have years of OEM warranty coverage (be sure to buy from an authorized dealer like AVS).
ohh-I'd suggest a whole-house house lightening surge protector installed at the electrical service panel in addition to having each system plugged into a surge protector strip that includes cable/sat and network connections.