Richard Jolly
October 16th, 2007, 06:31 AM
Every time I use the Recording Check Function (RET button) on my HD201E when shooting 720p25 all of the sequence immediately afterwards until the next power down/power up is unplayable, showing a blue or black screen during playback, with very occasional stills when shuttling in either direction. On an HDV studio deck a very screwed up picture shows, rather like a digitised version of a single head clog.
1st occurrence (JVC stock) I put down to a temporary head clog. 2nd occurrence (Maxell stock) in identical circumstances made me suspect something systemic. 3rd occurrence (JVC stock) was a controlled reproduction of the problem in the presence of my JVC dealer. Every time the disturbance is strictly limited to the sequence of shots between Recording Check and the next power down/power up; pictures before and after are perfect to the last/first frame.
JVC service in London suggested updating two older firmware modules (see separate thread) and head clean. Update had no effect as problem persists and head clog seems unlikely since recording and playback are perfect on either side of unplayable section which is so cleanly defined, so we suspect an electronic anomaly.
This is a particularly distressing one as you could lose everything from a specific location, though luckily the first time I had powered down between setups or could have lost half a day.
I don't see any mention of anything similar so it looks like a rogue camera. I haven't pursued this further yet with JVC - I dread losing the camera for days while it goes back across the water to London (from N Ireland) - so anything relevant would be very useful.
1st occurrence (JVC stock) I put down to a temporary head clog. 2nd occurrence (Maxell stock) in identical circumstances made me suspect something systemic. 3rd occurrence (JVC stock) was a controlled reproduction of the problem in the presence of my JVC dealer. Every time the disturbance is strictly limited to the sequence of shots between Recording Check and the next power down/power up; pictures before and after are perfect to the last/first frame.
JVC service in London suggested updating two older firmware modules (see separate thread) and head clean. Update had no effect as problem persists and head clog seems unlikely since recording and playback are perfect on either side of unplayable section which is so cleanly defined, so we suspect an electronic anomaly.
This is a particularly distressing one as you could lose everything from a specific location, though luckily the first time I had powered down between setups or could have lost half a day.
I don't see any mention of anything similar so it looks like a rogue camera. I haven't pursued this further yet with JVC - I dread losing the camera for days while it goes back across the water to London (from N Ireland) - so anything relevant would be very useful.