JVC AV-27S776 Linearity

tschappe · 08-25-2007, 12:28 PM

I had been searching for a replacement 27" CRT tv for some time.
Some of my requirements were NTSC/ATSC/QAM tuners and rear
panel connection for at least 3 devices. Also it had to be locally available.
Most of the available sets missed on some of these.
The JVC met these requirements with a bonus of a flat CRT, HD, and generally superior specs. When I compared the picture with other 27"
CRT sets at a local retailer, the JVC had a superior picture on analog
source.

Recently a local retailer offered this tv at a very good price, probably discontinued and closeout. I bought.

Initially there was a funny feeling about the picture when a scene was panned. Later we saw that a crawler changed as it moved across the
screen, wider on the right, narrower in the center and wider on the left. I found a 7-bar color test pattern. The center bar was the smallest with each further bar getting wider. The horizontal overscan
seemed to be excessive. I contacted the retailer and their tech came and looked at it and said he would get back with me. His answer was that JVC said this was normal and he couldn't do anything about it.
I sent an email to JVC Customer Support describing the problem.
I got a non-answer thanking me for my correspondence and asking
me to email if I have any other problems.
I also contacted the official JVC Service in the area and have not gotten a reply. When I again bugged the retailer, their only reply was
JVC tech says this is normal and they would allow me to choose another tv, JVC or other brand. Another JVC model has the same problem and other brands are much inferior. They did give me an 800 number for JVC tech. I made contact one time but have not been able to get any call back from them.

Has anyone seen this type of problem on JVC crt sets?
Except for this problem, I am quite satisfied with the picture and the features on this set. I may have to live with this, but I'd like to find a fix or at least an improvement.

IamaTVtech · 08-27-2007, 09:44 AM

Is the Television's aspect set to Panorama? Try Natural cinema or Full
Thanks,
J

tschappe · 08-28-2007, 09:04 AM

This tv is a standard 4:3 crt with HD capability.
The only aspects for this are 4:3, 16:9 and Vstretch.
The widths of the vertical color bands of the test pattern
do not change as I cycle through the aspects.

The test pattern is on the analog cable channels received
by the NTSC tuner.
Using the QAM tuner, I can receive 5 digital channels from
the cable. Unfortunately there is no test pattern.
The problem seems to be there also when a scene is panned.
I have not been able to view a crawler which would show it better.

In this series of tvs there is a wide crt in the AV-30W776 which
does have panorama and cinema aspects.

Any other ideas?
I believe the real problem is excessive horizontal overscan
but I have had trouble getting the local JVC Service Center to
even come and look at it.

08-25-2007, 12:28 PM	#1
tschappe What is HD? Join Date: Aug 2007 Posts: 2	JVC AV-27S776 Linearity I had been searching for a replacement 27" CRT tv for some time. Some of my requirements were NTSC/ATSC/QAM tuners and rear panel connection for at least 3 devices. Also it had to be locally available. Most of the available sets missed on some of these. The JVC met these requirements with a bonus of a flat CRT, HD, and generally superior specs. When I compared the picture with other 27" CRT sets at a local retailer, the JVC had a superior picture on analog source. Recently a local retailer offered this tv at a very good price, probably discontinued and closeout. I bought. Initially there was a funny feeling about the picture when a scene was panned. Later we saw that a crawler changed as it moved across the screen, wider on the right, narrower in the center and wider on the left. I found a 7-bar color test pattern. The center bar was the smallest with each further bar getting wider. The horizontal overscan seemed to be excessive. I contacted the retailer and their tech came and looked at it and said he would get back with me. His answer was that JVC said this was normal and he couldn't do anything about it. I sent an email to JVC Customer Support describing the problem. I got a non-answer thanking me for my correspondence and asking me to email if I have any other problems. I also contacted the official JVC Service in the area and have not gotten a reply. When I again bugged the retailer, their only reply was JVC tech says this is normal and they would allow me to choose another tv, JVC or other brand. Another JVC model has the same problem and other brands are much inferior. They did give me an 800 number for JVC tech. I made contact one time but have not been able to get any call back from them. Has anyone seen this type of problem on JVC crt sets? Except for this problem, I am quite satisfied with the picture and the features on this set. I may have to live with this, but I'd like to find a fix or at least an improvement.

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08-27-2007, 09:44 AM	#2
IamaTVtech What is HD? Join Date: Aug 2007 Posts: 1	Is the Television's aspect set to Panorama? Try Natural cinema or Full Thanks, J

08-28-2007, 09:04 AM	#3
tschappe What is HD? Join Date: Aug 2007 Posts: 2	This tv is a standard 4:3 crt with HD capability. The only aspects for this are 4:3, 16:9 and Vstretch. The widths of the vertical color bands of the test pattern do not change as I cycle through the aspects. The test pattern is on the analog cable channels received by the NTSC tuner. Using the QAM tuner, I can receive 5 digital channels from the cable. Unfortunately there is no test pattern. The problem seems to be there also when a scene is panned. I have not been able to view a crawler which would show it better. In this series of tvs there is a wide crt in the AV-30W776 which does have panorama and cinema aspects. Any other ideas? I believe the real problem is excessive horizontal overscan but I have had trouble getting the local JVC Service Center to even come and look at it.