Alaric
Prominent Member
- Joined
- Mar 12, 2001
- Messages
- 3,507
- Reaction score
- 1,488
- Points
- 854
- Age
- 50
- Location
- Peterborough, Cambs, UK
Hi There,
Had a drive out yesterday to deepest darkest Nofolk (actualy white and foggy, maybe it was a digital projection) and saw Henery and picked up a 'new' SMPS. Got it home and pluged it in and nothing.....A quick check with a voltage tester showed that there wasn't even power to the 'do not touch' live heat sinks, which made me check the power lead and in previous testing i'd obviously blown the mains fuse....New fuse and panic over, standby worked and then pressing the remote button caused my favorite we beastie to spring into life and the tubes fired up.
The picture was iffy, but a lot sharper than when testing with a Non S (1705) SMPS, so that was also good. A check of the 17.2v point and it was a touch high, so i re-adjusted. Checking the width as Henery had sugested (15hz internal patern, width to 95, ULTRA careful checking on Horizontal output board regulator, as shorting can vaporise tubes!) gave me 48.5V which is within the 48V-52V he'd said was good, but increasing to near the 52V would give more width which the 808s tends to need for 16:9. Upping to 51.6V, gave me too much width (4:3), so i nudged back down again to 51v.
Re-adjusted G2 as a couple were on when i checked, and then a quick manual focus, then electronic and onto geometry and then convergance and i had a nice picture again.
Starting the PJ up this morning and the convergance apeared a lot more stable, prior to SMPS replacement it was taking a good few minutes to walm up and become stable, which i thought a touch odd for an EM set (my 808 non S was very quick), Now its more like 20 seconds which is nice, though i like to try and leave the white field walm up routine for the 20mins it recomends.
In Convergance, i seem to have an odd error, particularly with the blue, where the left hand side is out at the far edge. Its not new to the SMPS, it was there before, I just hadn't gotten round to mentioning it. Its like the far side areas are too wide, adjust down and the left hand edge comes in, but throws the edge of its area out closer to the centre - Does this make sense, the adjustment is all in the one box.....It basicaly means that the last blue line kicks towards the edge of the screen....Its minor, but irritating.
The setting i was playing with, was 4:3, which is within the centre of the tubes, yet on 16:9 the patch which has problems is way within the image, yet the edge of that is also off....so i belive its a setting somewhere, maybe lens flapping, or edge focus, but so far its eluded me....any ideas.
Also a real basic question, what size fuse are people using in thier plugs....I'm Curious as i've not particularly thought much about it, but the one that blew was 3amp, which seems low, though if it had been running fine on that maybe its not so silly....however i also wonder how many people are just running on the obligatory 13amp ones !
cya,
Lee
Had a drive out yesterday to deepest darkest Nofolk (actualy white and foggy, maybe it was a digital projection) and saw Henery and picked up a 'new' SMPS. Got it home and pluged it in and nothing.....A quick check with a voltage tester showed that there wasn't even power to the 'do not touch' live heat sinks, which made me check the power lead and in previous testing i'd obviously blown the mains fuse....New fuse and panic over, standby worked and then pressing the remote button caused my favorite we beastie to spring into life and the tubes fired up.
The picture was iffy, but a lot sharper than when testing with a Non S (1705) SMPS, so that was also good. A check of the 17.2v point and it was a touch high, so i re-adjusted. Checking the width as Henery had sugested (15hz internal patern, width to 95, ULTRA careful checking on Horizontal output board regulator, as shorting can vaporise tubes!) gave me 48.5V which is within the 48V-52V he'd said was good, but increasing to near the 52V would give more width which the 808s tends to need for 16:9. Upping to 51.6V, gave me too much width (4:3), so i nudged back down again to 51v.
Re-adjusted G2 as a couple were on when i checked, and then a quick manual focus, then electronic and onto geometry and then convergance and i had a nice picture again.
Starting the PJ up this morning and the convergance apeared a lot more stable, prior to SMPS replacement it was taking a good few minutes to walm up and become stable, which i thought a touch odd for an EM set (my 808 non S was very quick), Now its more like 20 seconds which is nice, though i like to try and leave the white field walm up routine for the 20mins it recomends.
In Convergance, i seem to have an odd error, particularly with the blue, where the left hand side is out at the far edge. Its not new to the SMPS, it was there before, I just hadn't gotten round to mentioning it. Its like the far side areas are too wide, adjust down and the left hand edge comes in, but throws the edge of its area out closer to the centre - Does this make sense, the adjustment is all in the one box.....It basicaly means that the last blue line kicks towards the edge of the screen....Its minor, but irritating.
The setting i was playing with, was 4:3, which is within the centre of the tubes, yet on 16:9 the patch which has problems is way within the image, yet the edge of that is also off....so i belive its a setting somewhere, maybe lens flapping, or edge focus, but so far its eluded me....any ideas.
Also a real basic question, what size fuse are people using in thier plugs....I'm Curious as i've not particularly thought much about it, but the one that blew was 3amp, which seems low, though if it had been running fine on that maybe its not so silly....however i also wonder how many people are just running on the obligatory 13amp ones !
cya,
Lee