Well, for quite some time I’ve been having some noise lines appear on the screen – primarily with red, but it appeared that all 3 tubes were affected. I wondered if this was the projector or the signal. Having recently played around with checking the grayscale – it was pretty obvious my line problem was getting more serious – the lines were pretty obvious during the test patterns. Normal video material was mostly ok, but some movies such as The Incredibles really showed the problem in some scenes.<\/p>\n
My HDTV source is a satellite box (starchoice) and it didn’t appear to have the same problem, but with the amount of MPEG2 compression artifacts it is hard to be certain that there isn’t a problem. Of course if it was my source – then it might be my DVD player, or my quadscan, or the cables.. so many items in the signal path that I couldn’t easily isolate.<\/p>\n
I had figured that using the transcoder<\/a> I have plus my ‘extra’ Sony DVD player [DVP-NS50P<\/a>] running in progressive mode I could bypass the quadscan. This was relatively easy to try out, and it seemed not to have any problems – other than the somewhat questionable transcoding. No lines.<\/p>\n I then tried the Sony DVD player via SVideo to the quadscan, and again – no issue. Hooking up the Toshiba DVD player [SD-2109<\/a>] via SVideo instead of my usual component connection the lines also seem to go away. This is an interesting A\/B comparison since the Toshiba has both outputs active in parallel, so I can switch between the two outputs and verify that the signal is cleaner on one than the other.<\/p>\n The Toshiba seems to have a very subtle noise in the signal (almost like a ground loop hum) that I don’t see with the Sony. While the trusty 2109 has served me very well for many years, maybe its time to retire it. The 2109 was a great (quality) player, but at this point in time it seems like the (cheap) Sony has an edge on image quality.<\/p>\n After digging around to remove the 2109 from the rack (what a mess back there) – and getting the Sony in place – it appears that with component input I still have the same noise problem. The Sony SVideo is still cleaner than the Toshiba – so I’ll stick with it for a while. The component cables may be the problem, but it may also be the quadscan’s ability to process component input.<\/p>\n","protected":false},"excerpt":{"rendered":" Well, for quite some time I’ve been having some noise lines appear on the screen – primarily with red, but it appeared that all 3 tubes were affected. I wondered if this was the projector or the signal. Having recently played around with checking the grayscale – it was pretty obvious my line problem was … Continue reading “Lines..”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-61","post","type-post","status-publish","format-standard","hentry","category-ampro-journal"],"_links":{"self":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/posts\/61","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=61"}],"version-history":[{"count":0,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/posts\/61\/revisions"}],"wp:attachment":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=61"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=61"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=61"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}