Odd tuner fault on 'RE' type HDR-FOX

[MontysEvilTwin]

I have a strange fault on a revised-hardware HDR-FOX. It is running 1.03.12 firmware (3.00 CFW). If it crashes and reboots, or if I reboot using Telnet or Web-If (I don't think it is a CFW related problem) the tuner does not work: no picture or sound plus 0% strength and quality on all channels. If I then power down using the remote or front panel button and turn it back on after the disk has spun down it is fine. The problem is 100% reproducible. If you switch on from standby it is fine and scheduled recordings in standby are fine. I have done a factory reset (without disk format) and have run the CFW fixdisk procedure. No change. Out of interest, I installed 1.02.32 firmware. This, as expected, completely disabled the tuner. Reinstalling 1.03.12 made the tuner work again but the issue persists. Any ideas?

 

[Black Hole]

Maybe this is consistent across RE boxes? Anybody confirm/disprove?

 

[MontysEvilTwin]

Maybe this is consistent across RE boxes? Anybody confirm/disprove?

My other RE box is fine but that one has had a replacement front panel with the older version of Micom firmware. I will swap the front panel over on the faulty box at some point and see if it makes a difference.