Probabilmente si è esaurita la batteria o condensatore che funge da memoria tampone in assenza di alimentazione. Il tempo che è stato in riparazione (quindi sconnesso dalla rete) deve avergli dato il "colpo" di grazia... Se non ci sono batterie/condensatori che svolgono tale funzione potrebbe essere qualcosa di piu' grave.
In rete ho trovato questo circa la tua problematica:
"Do a processor reset. It is described in the manual at the bottom of page 54. First unplug for at least 3-5 minutes. Then try to power on as usual. If still not operating successfully do the following:
Put unit in Standby mode (amber)...press and hold the Surround Mode Selector button and the Tuning Mode selector button for 3 seconds. Unit will then auto display RESET.
This will erase all previous settings so if possible make a record of current settings. If not re-run EZSet/EQ.
Upgrade firmware available from Harman Kardon website under support. You will need a true Serial cable and port. Previous upgrade for 635 was 4.12 or 5.12 depending on date of manufacture I believe...new one I have read is 4.15 or 5.15.
I upgraded to 4.12 and have had only one instance of lock-up since in the succeeding 12 months (likely heat related). Settings are not lost and surround memory remains when unit is ever powered off with the Main power switch."
Ultima modifica di patrix78; 02-12-2015 alle 10:06
TV LG 50LB670V; Panasonic TX-P42G30E; Samsung T24D390EW Sinto Yamaha RX-V671 Source Sony BDP-S790; Samsung DVD-HD950; MySky Pace 5002; MV MySky HD @2TB Front JBL E80 Centre JBL EC35 Surround Wharfedale DFS 10 Sub Klipsch KSW-12