Hello
If you have the original remote
check the display button or dimmer button.
If you don't get any illumination from the display screen, that means that display florescent is at the end of life needs to be serviced.
Regards.
SOURCE: Harmony 880 does not change input with Onkyo HT-R520 amplifier
You will either have to use your Onkyo remote to teach the Harmony those functions or try one of the similar model receivers in the Harmony software. I had to chose a similar DVD player in the list in order to get my Harmony to play nice with my DVD player.
SOURCE: onkyo HT-R520 Immediatly goes
This Yamaha model has a "Thermal Protection Integrated Circuit", You can check the online manual at www.yamaha-uk/pdf/owner_manuals/rx-v2500.pdf
SOURCE: Onkyo HT R520 Home Theatre receiver/amplifier
I had the same problem too. All functions seemed operational but I could not get any sound out of my unit. I took my HT-R520 (4yr Old) to the Onkyo Service center in Denver Colorado (DTS). I paid out $50.00 to have them diagnois the problem. I was hoping that they would listen to me and the info I found via fixya user jaf323 and fix the problem for $50.00. Not....they ignored me. They told me it was my power supply and it would be $250.00 to fix the problem. Sooo, I decided investigate the problem myself. After finding an Okyo schematic free online for the 600 model which is similiar to the HT-R520, I was able to find the L7002 coil. I took my DVM to all of the coils I could get to labled 2R2 on the large horizontal PWA on the right side of the unit as you look at the front panel and sure enough, the L7002 coil was "open". All of the other coils (approx 4) showed a resistance of about 0.3MOhm. I pulled off the bad coil and swapped it out with same coil marked 2R2 from the headphone PWA using a tweezer soldering iron. I am a novice when it comes to electronics. This was a simple fix. BTW the little coils are about 1/8" x1/8" - little guys.
SOURCE: My Onkyo SKW-520 subwoofer has
This is caused by the aging of a component from the amplifier - as they age the capacity gets lower = the resistance to the lower frequencies increases = the sound gets weaker.
To fix that you must open the subwoofer and check all the electrolytic capacitors from the signal path - all the way from the input RCA jack to the output of the integrated amplifier.
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