Further report on Test 8: PL trigger of BL1611
Part B, BL3500:
BL3500 behaves exactly as BL2000 above. The only ‘funny’ is that when the PL voltage forces a switch from video to audio, the BL3500 display continues showing the original video source.
Note that the BL1611 does require at least 10 seconds of ‘power off’ to clear the audio-only mode. It then takes about another 10 seconds to re-configure when the power is re-connected.