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Author Topic: color problem scramble  (Read 9152 times)

Blanbek

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color problem scramble
« on: February 01, 2015, 04:36:06 PM »
Hello,

I started a new project and am having a color problem on the bottom left of the screen ?

the screen is a Sony Trinitron....

someone has an idea or has encountered the same problem?

Thanks!! Berny
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level42

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Re: color problem scramble
« Reply #1 on: February 01, 2015, 06:01:18 PM »
Yup.....you cant use a Trinitron on its side.
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Re: color problem scramble
« Reply #2 on: February 01, 2015, 06:54:42 PM »
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Etienne MacGyver

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Re: color problem scramble
« Reply #3 on: February 01, 2015, 07:19:25 PM »
Looks like a decaussing issue.

interesting, i never knew the "trinitron on its side thing"

Guess we learn something every day  :D
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Blanbek

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Re: color problem scramble
« Reply #4 on: February 01, 2015, 07:30:05 PM »
Thank you for the information André.
So I will try with one another tv screen...
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level42

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Re: color problem scramble
« Reply #5 on: February 01, 2015, 08:07:30 PM »
Still can use it in horizontaal mode :)

It's the Aperture grill causing this.....its a bit like a curtain and because it moves when you tilt it you will get this result....

You could still try a degauss of course, it's worth it but I don't think that is the problem this time.

You can still use the Trinitron in horizontal mode of course....
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DarthNuno

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Re: color problem scramble
« Reply #6 on: February 01, 2015, 09:04:44 PM »
Well, I'm using a Trinitron inside my galaxian cabinet, but the screen is more in a flat position than vertical, that certainly explains why I don't have this issue...interesting and good to know anyway  ;)
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Blanbek

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Re: color problem scramble
« Reply #7 on: February 06, 2015, 05:59:38 PM »
Hi André,

I confirm with a Sanyo tv it works correctly...

one more question :)

there is a Sanyo service menu to adjust the picture? or does it make the setting on the tv pcb?

Thanks, Berny




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Wurstkopp

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Re: color problem scramble
« Reply #8 on: February 07, 2015, 07:08:17 PM »
You'll hardly find anyone knowing the inside of a certain tv as there are thousand different models out there. A quick google search will give you the answer in a sec.
If there's no service menu then take a look on the chassis. Most tvs will have a least a few pots to adjust the picture but only a small number will have all the settings known from arcade monitors. Most tvs will have h-width coils like the older arcade monitors.
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Re: color problem scramble
« Reply #9 on: March 07, 2015, 09:09:19 PM »
Judging by the case of that TV i'm pretty sure it will have an electronic (menu-driven) set-up.

Indeed google is your best (only ?) friend here...
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level42

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Re: color problem scramble
« Reply #10 on: March 07, 2015, 09:12:24 PM »
Found this....

SANYO
1.
* Unplug the power cable.
* Press and hold the {MUTE} button on the remote control while plugging the power cable back into the outlet.
* Keep pressing the {MUTE} button until the TV powers on with the Service Menu displayed.
* Use the {CH+} {CH-} buttons to select menus.
* Use the {VOL+} {VOL -} buttons to change settings.
* Some menus might have sub-addresses. Use the numeric buttons {0} to {7} to adjust sub-item data.
* Press the {MENU} button or turn the TV off to exit.

2.
* Unplug the power cable.
* Press and hold the {VOL -} button on the TV
while plugging the power cable back into the outlet.

* Keep pressing the {VOL -} button until
the TV powers on with the Service Menu displayed.

* Use the {CH+} {CH-} buttons to select menus.
* Use the {VOL+} {VOL -} buttons to change settings.

* Some menus might have sub-addresses. Use the
numeric buttons {0} to {7} to adjust sub-item data.

* Press the {MENU} button or turn the TV off to exit.
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Blanbek

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Re: color problem scramble
« Reply #11 on: March 07, 2015, 09:26:28 PM »
Hello André,

I found your first sequence for the set-up menu but not work ? so I made a small adjustment with the potentiometers on the  pcb... But not perfect...
I will try with your sequence 2

Thanks!

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level42

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Re: color problem scramble
« Reply #12 on: March 07, 2015, 11:34:53 PM »
No idea If it works for this model, it might be for US TVs....

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