REQ: Any good docs on Calibrating TV Gain/Cut off

[Alasdair Campbell]

Hi I'm looking for good articles on calibrating my TV set which is showing a
very strong blue cast.

No matter how much searching on google I do I can't find anything detailed
enough.

Any links would be greatly appreciated.

Alasdair

 

[Charles Schuler]

Hi I'm looking for good articles on calibrating my TV set which is showing
a
very strong blue cast.

CRT, LCD, DLP, Plasma, ?

If it is a cathode ray tube, there is a blue gun which, in your case, might
be underbiased.

 

[Alasdair Campbell]

CRT, LCD, DLP, Plasma, ?

Sorry about that, it's a Sharp 16:9 CRT TV.

If it is a cathode ray tube, there is a blue gun which, in your case, might
be underbiased.

My problem is that in service mode, my TV shows a well balanced image,
almost perfect, however after cycling the power, back in regular use the
image is blue cast and very dark. It's as if the settings arn't being saved,
yet the manual states that changes are applied automatically - which they
are - in servcice mode.

Initially the TV was fine but would occaisonally fade to a green cast.
Switching off then on would fix this. I tried to degauss using another
monitor incase the built in circuit wasn't operating correctly. for a while
the picture was fine until it retunred to green. Through judicous & ignorant
use of the gain and cut off values in service mode I got it to go blue...

 

[Leonard Caillouet]

If you want specific help, provide specific information...brand and model,
brand and model, brand and model...

I get calls all the time with the question "can you fix my TV?" The
response is always the same...

Leonard

 

[Alasdair Campbell]

If you want specific help, provide specific information...brand and model,
brand and model, brand and model...

I get calls all the time with the question "can you fix my TV?" The
response is always the same...

Leonard

Hi Leonrard,

I've already asked for specific help here - SHARP 28JW-73H - - Need Help
with Service Mode Adjustments. As responses dried up I thought I'd ask for
docs on general TV calibration.

As you can see I had a specific query - service mode changes on this set
were not being saved/applied correctly; and also a general query asking for
good documentation on the calibration process - suitable for any CRT TV I
suppose.

Regards,

Alasdair

 

[Meat Plow]

My problem is that in service mode, my TV shows a well balanced image,
almost perfect, however after cycling the power, back in regular use the
image is blue cast and very dark. It's as if the settings arn't being saved,
yet the manual states that changes are applied automatically - which they
are - in servcice mode.

Maybe the changes are not being saved by some flaw in the eeprom?

 

[Meat Plow]

Hi I'm looking for good articles on calibrating my TV set which is showing a
very strong blue cast.

No matter how much searching on google I do I can't find anything detailed
enough.

Any links would be greatly appreciated.

Alasdair

I posted a link, did you not see it?