spike@wasp.eng.ufl.edu (Spike) (03/12/91)
Many of you I'm sure have seen the flickering and monochrome modes of the Zenith FTMs caused by the bad connections on the video cable on the CRT board. I have just found the exact same problem on the ZCM-1390-Z. Has Anybody else encountered this in the 1390-Z besides me? Ken Gage "Caretaker of Zenith Heaven, University of Florida"
burd@hydra.unm.edu (Stephen Burd ASM) (03/13/91)
In article <1991Mar12.132659.12253@eng.ufl.edu> spike@wasp.eng.ufl.edu (Spike) writes: > > Many of you I'm sure have seen the flickering and monochrome > modes of the Zenith FTMs caused by the bad connections on the > video cable on the CRT board. > I have just found the exact same problem on the ZCM-1390-Z. > Has Anybody else encountered this in the 1390-Z besides me? > I've certainly had that problem with my color ZCM-1490-Z. I don't know what connections are at fault but I know a couple of hard whacks usually settles it down for awhile. I had it in for service during the warranty period but the technician couldn't replicate the problem. It's extremely annoying when a white on purple screen suddenly shifts to light blue on purple. It also doesn't make me anxious to run out and buy a Zenith television! -- FROM: Stephen D. Burd AT&T: (505)-277-6418 USNAIL: Anderson School of Management University of New Mexico INTERNET: burd@hydra.unm.edu Albuquerque, NM 87131
news@eng.ufl.edu (03/13/91)
>I've certainly had that problem with my color ZCM-1490-Z. I don't know >what connections are at fault but I know a couple of hard whacks usually >settles it down for awhile. I had it in for service during the warranty >period but the technician couldn't replicate the problem. It's extremely >annoying when a white on purple screen suddenly shifts to light blue on >purple. It also doesn't make me anxious to run out and buy a Zenith >television! >-- >FROM: Stephen D. Burd AT&T: (505)-277-6418 >USNAIL: Anderson School of Management > University of New Mexico INTERNET: burd@hydra.unm.edu > Albuquerque, NM 87131 From: spike@wasp.eng.ufl.edu (Spike) Path: wasp.eng.ufl.edu!spike Stephen, I can understand your frustration. I do believe that I have a firm understanding of the problem. We must think interms of analog instead of digital. Analog engineering is almost a lost art, and still very sensitive. A noisy analog signal can give you more problems than you can handle, and this is the core of our problem. Now the folks who decided to use this style of connector may not have been in an anolog frame of mind. (I'm not saying that those folks aren't competent, it just that they may not have been prepared for the problems of connecting analog signals) I, along with a couple of EE types around here, agree that coax/bnc type connectors are the best connectors for the job. So Stephen our problem is that the connection on the 'video output module' (the board on the back of the CRT) isn't perfect. The connector number is 5R9. The surest way to fix the problem is to hard solder the connector. In other words take the connectors out of the plastic and solder them to the posts. (be sure to insulate them with heat shrink of something like it, because we don't want those to come together and cause more problems) Good Luck Stephen, call me if you have any questions. Ken Gage "Caretaker of Zenith Heaven " University of Florida. (904)392-2464 PS. please don't FlAME me. I am trying to make Zenith users' lives a little easier.