To recall, just use PRESET +/-.
Ensure digital inputs are mapped correctly using the button. "PROTECT" Error Flashes on Display
This occurs after running a factory reset. You will need to re-program your radio presets and re-enter your speaker distance preferences. How to Perform a Factory Reset sony str k670p manual
The manual dictates a strict sequence of events for wiring to prevent electrical shorts and signal interference. 1. Audio and Video Source Connections
If you are still having trouble after trying these steps, your best bet is to consult the official manual using the sites listed earlier or consider reaching out to a local electronics repair shop for hands-on assistance. To recall, just use PRESET +/-
If you want, I can:
Verify that speaker impedance matches the 6-ohm rating on the back panel and clean input jacks with contact cleaner if the signal is intermittent. Sony STR-K670P Service Manual | PDF | Soldering - Scribd You will need to re-program your radio presets
The Sony is a 5.1-channel FM Stereo/FM-AM receiver, originally released around 2005 as the core unit for home theatre systems like the HT-DDW670 .
is a classic representative of late-1990s home audio technology. Part of Sony’s widely popular “STR” series of stereo receivers, this unit was designed to power home theater systems and high-fidelity stereo setups. Despite being a vintage model, many audiophiles and budget-conscious listeners still use the STR K670P today for its warm sound signature and robust build quality.