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Sony KV-36HQ100 |
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#1 |
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Forum Member
Join Date: Dec 2004
Posts: 108
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Sony KV-36HQ100
I own a Sony KV-36HQ100 and wondered if any other users did. i have had the set for about 18 months now and the internal speakers are causing magnetic picture shading on the edges of the screen right and left. Is there a fix for this.
also is there a service mode that i can get into. apart from this minor problem the set is excellent. http://www.sony.co.uk/ShowProduct.do...uct=KV-36HQ100 many thanks Peter |
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#2 |
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Forum Member
Join Date: Dec 2002
Location: South Lanarkshire. Scotland
Posts: 2,005
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Quote:
Originally Posted by Peter Culdrose
I own a Sony KV-36HQ100 and wondered if any other users did. i have had the set for about 18 months now and the internal speakers are causing magnetic picture shading on the edges of the screen right and left. Is there a fix for this.
also is there a service mode that i can get into. apart from this minor problem the set is excellent. http://www.sony.co.uk/ShowProduct.do...uct=KV-36HQ100 many thanks Peter |
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#3 |
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Forum Member
Join Date: Dec 2004
Posts: 108
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thanks, i wonder if this has been ommited in assembly.
does anyone else own one of these sets and cab tell me what shield should be next to the speakers. |
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#4 |
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Join Date: Aug 2003
Location: Cornwall, UK
Posts: 2,014
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The shielded speakers that I have seen have had a cap fitted over the magnet assembly. This is an integral part of the speaker, so is unlikely to be missing.
If you want to check, have a look at the back of the speakers. If it is a smooth metal can, they are shielded. If you can see the steel backplate and a large dark grey ring, they possibly aren't. Magnetic distortion happens quickly, after a few hours or days, not 18 months. Have you tried running a degauss cycle? It's possible that if you leave the TV in standby, the automatic degauss isn't running. Try switching off at the mains a few times. |
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#5 |
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Forum Member
Join Date: Dec 2004
Posts: 108
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thanks for this, ive tried switching at the mains a few times and no change. Am just about to take the back off to check the speakers.
I am actually wondering if it is doing an auto degause at start up at all. For example on my pc monitor you can actually hear it doing it on start up and when manual degausing. With the tv there is no such sound, just a click. do you think this is normal for the tv or that the auto degause is not actually working. Peter |
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#6 |
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Join Date: Dec 2004
Posts: 108
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Getting somewhere now. There are no shields on the speakers. I removed the speakers on the lh side but no change in picture. Since then the set has auto degaused once on start up and the picture has improved.
I suspect that this may be the problem rather than the speakers. Do you think it should auto degause every time on start up and there is therefore a fault. Or, is it possible that it is set to auto-degause on, say every 20th time etc. |
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#7 |
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Join Date: Dec 2002
Location: South Lanarkshire. Scotland
Posts: 2,005
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Quote:
Originally Posted by Peter Culdrose
Getting somewhere now. There are no shields on the speakers. I removed the speakers on the lh side but no change in picture. Since then the set has auto degaused once on start up and the picture has improved.
I suspect that this may be the problem rather than the speakers. Do you think it should auto degause every time on start up and there is therefore a fault. Or, is it possible that it is set to auto-degause on, say every 20th time etc. The set ALWAYS degausses from mains switch-on.......I suspect there is a fault in the degauss circuit and I do not recommend a D-I-Y repair. |
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#8 |
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Join Date: Dec 2004
Posts: 108
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Many thanks John. Fortunately I have just discovered that the set is still under g'tee being purchased last October. The Mastercare engineer is coming out on Wednesday so I will let you know what transpires.
Thanks again. Peter |
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#9 |
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Forum Member
Join Date: Dec 2004
Posts: 108
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Reply from another engineer:
This 36" AE7A-model does have an SF-board which incorporates an processor for keeping optimal purity and dynamic convergence by means of 4 extra coils around the CRT's funnel. (32" models do have only purity corrections, no dynamic convergence). With a special adjustment mode you can adjust these items, but due to the complexity of this set I advise you not to do anything by yourself and first have the working of the degaussing circuit checked. With this complex kind of sets, it's a good habit to save the contents of the NVM onto a PC with the TRACE interface. After reloading a dataset to the TV, the data must be copied from the NVM into the Viper by a special TT-code, but that's indicated by the newer versions of the TRACE software. |
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#10 |
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Join Date: Aug 2003
Location: Cornwall, UK
Posts: 2,014
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Did you understand any of that?
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#11 |
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Forum Member
Join Date: Dec 2004
Posts: 108
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oh dear, the mastercare engineer has just been and has said that all widescreen tv's are like this because of the doming effect and its within spec. No adjustments tried. Refused replacement set or money back. They are picking up the set on friday to go to their workshops. He thinks if anything it may be a warped shadow mask.
Has anyone got any idea about what the law says about purchases within the first 12 month g'tee. Can they simply agree to repair it or am I legally entitled to a refund or replacement. Bought from dixons online hemelhemspead. |
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#12 |
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Forum Member
Join Date: Aug 2003
Location: Cornwall, UK
Posts: 2,014
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My Toshiba 36" (nearly 3 years old) has perfect colour purity across the whole screen. It does, however, have 2 vertical bands, about an inch wide, and a couple of inches from the edge. These bands are slightly darker than the rest of the picture, and are only noticeable on a green image, such as football.
I believe that this kind of "distortion" is common. The kind of distortion that you get from magnetic fields results in a large semi (or quarter) circle with a prominent colour cast - normally purple or greenish. Most retailers will only offer a refund/exchange within the first 30 days, or later if they can't fix it after a couple of attempts. |
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#13 |
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Forum Member
Join Date: Jun 2004
Posts: 20
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sony36hq100
hi my friend.i also have recentley got my self a sony 36hq100.ref your speakers discolouring the edges of the picture, mine is the same i am afraid to say.switching off via thre mains and leaving overnight helps the problem but does not seems to be a cure!
i did have an lg 44 inch dlp previously which i owned for 10 months.i bought this from currys.after 10 months the cooling fan started to squeak.they took it away for repair 6 weeks later still no tv.so i complained and they agreed to exchange the tv for any one of the same value.thus why i now own a sony just like yours.so may be as your fault can not be repaired you may also be able to exchange your set. although you are not entitled to a refund.hope this helps regards tdriver |
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#14 |
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Forum Member
Join Date: Oct 2000
Location: Sussex
Posts: 12,173
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I'm surprised the mastercare repair man didn't try to manually degause the screen, or perhaps I'm not that surprised!
Colour purity problems occur a lot more these days it seems as so few people turn off the TV at the mains switch..... using standby doesn't degause the screen and often turning on and off quckly at the mains switch doesn't degause (much) either, so I'd suggest turing off at mains switch for an hour or more then turn on and see if it clears any purity errors. Certainly when I had a TV shop (5 years ago) we had a few widescreen TV's with slightly faulty tubes, we got slight purity errors at the edges of the screen left and right... Thomson, whose TV's were affected, said that a batch of tubes were at fault. But we didn't notice on many other TV's.... but as mentioned 2 posts up, some distortion can be noticed on some widescreen TV's at the edges..... the Widescreen format really is pushing this 100 year old CRT technology! |
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#15 |
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Forum Member
Join Date: Dec 2004
Posts: 108
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Sony engineers came this afternoon and immediately recognised the fault. They cured it by putting tiny Sony circular magnets on different parts of the tube to correct the shading. Picture is now as perfect as it can get.
Result very satisfied. The engineers certainly knew their stuff. thanks also for all the help on this excellent forum. Problem sorted...... What a wonderful set this is, the finest crt picture on the market and i think the smallest aperture. Peter |
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