fangchin@leland.Stanford.EDU (Chin Fang) (04/14/91)
In article <1991Apr14.021735.8177@magnus.acs.ohio-state.edu> skesterk@magnus.acs.ohio-state.edu (Shane Kesterke) writes: >Since Sieko and Sony monitors have been a hot item of discussion lately I've >got question. >I have a 386SX-20MHz system with a Prodesigner-II (512K) and a Sieko >CM1440 (I'm pretty sure that's the model, it's the interlaced Sieko monitor) >It's got a very good picture but there's one thing that really annoys me. >There's a very thin horizontal black line about 1/3 the way up from the >bottom of the screen that NEVER goes away. It becomes more and more visible >the lighter the background gets. >I called Sieko tech support and they said it's normal and it's part of Sony's >monitor technology (since Sony manufactures Sieko's picture tubes). >I just wondered if the rest of you Sony and Sieko owners have to deal with >the same odity that I have to deal with because sometimes that little line >annoys me so much I just want to trade my monitor in for a not-so-high >quality one. >Was the Sieko tech support right or do they just tell their customers that >so they don't have to go through the hassles of replacing faulty monitors? ******************************************************************************* This is a really interesting question. I don't have a firm answer yet. But I will tell you as one with lots exposure to SONY Trinitron (R) tubes used for PCs and Workstations (SUN SPARCstations 1, 1+, 2, IBM/RS6000s, and DECstations 3100, all use color monitors OEMed by SONY). As far as I can tell, SONY's 1304HG Multiscan DOES have the thin line you mentioned, so do many 14" monitors using the Trinitron tubes, eg, your own and AcerView 35, which btw, is a probably the best buy 14" Trinitron, because it's wider horizontal sync range and much lower price $490 or so) Of all brand new AcerView 35s that I have seen, all show the thin line you mentioned. I have also seen many brand new SONY 1304HGs do the same. Next, workstation OEMed monitors. On DECstation 3100s, I tried to tell such thin line without any success, 13 of them. Of all 13 IBM/RS6000s that I take care of, I have never seen any thin line either. BUT, on Sun Sparcstation 1s, (not 1+s or 2s), I DO have noticed that some of them show the thin line at 1/3 from top going from left to right. The rest Sparc 1s and all 1+s and 2s monitors don't have such problems. I manage 54 of them, but I only have seen such thin lines on a few so far, and they are among the earlier models. Honestly, I am puzzled too. Maybe someone who really understands the Trinitron single gun design can provide some insight to this. I will talk to someone in SONY of America as soon as I get a chance. If I can find out any answer before anyone else reading this newsgroup, I will post. >Any help or comments on my delema would be very appreciated! Thanks for >your help! Well... I didn't help any. But you are welcome anyway. Chin Fang Mechanical Engineering Department Stanford University fangchin@leland.stanford.edu
jgw31657@uxa.cso.uiuc.edu (Jeff Wiedemeier) (04/14/91)
The line across the screen is annoying at first, but I found that I got used to it very quickly (on a Seiko CM1450). The only time I notice it any more is in 1024x768 mode with a white or light gray background (unless I am looking for it). I also checked our old Sony trinitron TV at home and it also has this line. It is just a "feature" of the design. -- ______________________________________________________________________________ Jeff Wiedemeier |Co-sysop, The Prayer Tower ( 217-359-0043 HST ) j-wiedemeier@uiuc.edu|* support for Apple IIGS ( 217-359-0011 HST and V.32 ) =====================| - and PC ________________________________________ talon (Prayer Tower) |* on-line games | << Place advertisement here >> | ------------------------------------------------------------------------------
fangchin@leland.Stanford.EDU (Chin Fang) (04/15/91)
In article <1991Apr14.095832.10706@ux1.cso.uiuc.edu> jgw31657@uxa.cso.uiuc.edu (Jeff Wiedemeier) writes: > [some stuff deleted] >I also checked our old Sony trinitron TV at home and it also has this line. >It is just a "feature" of the design. > But I am puzzled by the fact that MANY Triniton tubes mentioned in my last post DO NOT show this thin line, how can we explaine this? I think I have a pair of very picky eyes having been spoiled by hig-res and pricy monitors for quite a while, could I still miss something? Yes I did use WHITE background when I did my checkings. Chin Fang Mechanical Engineering Department Stanford University fangchin@leland.stanford.edu
phil@brahms.amd.com (Phil Ngai) (04/15/91)
The line(s) is(are) how you tell if it is a genuine Sony Trinitron tube or not. (the bigger tubes have two lines) (of course, you only need this if you can't recognize Sony's distinctive cylindical shape) -- The best way to preserve your RKBA is to vote Libertarian.
hudgens@sun13.scri.fsu.edu (Jim Hudgens) (04/16/91)
In article <1991Apr15.041623.4963@amd.com> phil@brahms.amd.com (Phil Ngai) writes: >The line(s) is(are) how you tell if it is a genuine Sony Trinitron >tube or not. (the bigger tubes have two lines) > I've been following this thread, and wondered if everyone had missed the top line, which is clearly visible on the SS1 I am using right now. It has 2 lines visible at about 1/4 and 3/4 the height of the screen. Its a 16" monitor with 1152x900 resolution. Nice monitors, for sure. JHH -- Jim Hudgens Supercomputer Computations Research Institute hudgens@sun13.scri.fsu.edu "Nothing's for sure except DEC and VAXe .. er, death and taxes"
liggio@cunixf.cc.columbia.edu (Vincent J. Liggio) (04/16/91)
The line on a Trinitron tube is definitely not a faulty monitor. Because the Trinitron design uses a screen behind the phosphor that creates the vertical (?) separation of lines, there has to be something to hold this little screen up. The little line that you see is a minute wire that runs behind the screen. Larger monitors have two since they have more to support. Why on the bottom? Don't know. I have a Sony 1304, and I only find the line noticible when I have a white screen. In general I never notice it. Actually, I had worked on one quite often, and never noticed it until someone one the net posted about it and I was stupid enough to look, because now I notice it! Vince
fangchin@leland.Stanford.EDU (Chin Fang) (04/16/91)
In article <2753@sun13.scri.fsu.edu> hudgens@sun13.scri.fsu.edu (Jim Hudgens) writes: >In article <1991Apr15.041623.4963@amd.com> phil@brahms.amd.com (Phil Ngai) writes: >>The line(s) is(are) how you tell if it is a genuine Sony Trinitron >>tube or not. (the bigger tubes have two lines) > >I've been following this thread, and wondered if everyone had missed >the top line, which is clearly visible on the SS1 I am using right now. > >It has 2 lines visible at about 1/4 and 3/4 the height of the screen. >Its a 16" monitor with 1152x900 resolution. I can tell you one more puzzling thing that I have observered on one of our 54 SPARCs. This particular Sparc 1 (not 1+ or 2) monitor has vertical lines, three of them, evenly spaced from left to right (or vice versa, if you prefer) I can tell you, I am really puzzled by this. To bad I am too darned busy lately to get hold of my contact in SONY of America to straight this out. >Nice monitors, for sure. Agreed. Once one is in X windows, who cares these thin lines? You never see them. Chin Fang Mechanical Engineering Department Stanford University fangchin@leland.stanford.edu