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Joined: Jan 2003
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Goose
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Goose Jan 14, 11:07pm - #6856 

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Norway
Electrical interference problem on GT! please help

Hello.
I got a 7" LCD screen in my car 2000 Celica GT.
But I got a waves on the screen.
The wave come from Car alternator.
I tryed to ground the screen, I used new cables , I truyed everything in cable and grounding front.

But I still get a electrical interference from +12V

How to fix it?

The must be a way to fix it.
I need your help guys! Please then! Help me!

Martin
PS! This site is great! Go Celica go!

2000 Toyota Celica GT
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DJTyDogg
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DJTyDogg Jan 14, 11:18pm - #6857 
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Nebraska
how are you hooking it up? doesnt it need a 12v power source to run? do you have a custom stereo in your ride?
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Goose
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Goose Jan 14, 11:28pm - #6858 

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Norway
I got a pannasonic cdx 802 cd player
and TM-701L LCD screen.

The cdplayer is connected to the toyota cables througt iso connectro.

The +12V for the LCD screen are connected to red +12V cable (the same as CDplayer is connected to)

The ground for the CD player is througt ISO and for the LCD is an 8 square cable direct from car body.

I use standard toyota speakers. 4 front 2 rear.

I do not have any other stereo units in the car and the cdplayer does'n have any interference.

So I got ony the waves on my screen
(the horizontal lines when the engine is turned on)

Can you help me?

If I don't answer to your question just say, ( my english is not a 100% good) smile Hope you understand...

So I hope you can help me.
Martin

2000 Toyota Celica GT
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DJTyDogg
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DJTyDogg Jan 14, 11:38pm - #6859 
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Nebraska
okman try this...i wonder if it is the same as it is with a stereo install. Run your 12v power wires off of your fuse box. keep it away from the stereo. find a fuse in the fuse box and tie your power for the LCD around one of the fuses and put it back. make sure that the fuse doesnt have constant power or your screen will stay on the whole time. you need one with power on only when car is running. you can check this by putting it into the fuse for your headlights...then turn your headlights on and then your screen and see if it works...try that ...later
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Goose
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Goose Jan 14, 11:47pm - #6860 

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Norway
I will try it!
Thx. Thx a lot!
I will post if it works or not...

Thank you very mutch.
Martin

2000 Toyota Celica GT
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Steven
ECelica Staff
Steven Jan 15, 12:15am - #6861 
2001 Spectra Blue Mica Toyota Celica GTS
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2001 Toyota Celica GTS

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Moved to Custom Mods & Performance Tuning Tips & Reviews
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Goose
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Goose Jan 15, 5:38pm - #6862 

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Norway
It doesn't work.
I still get those inoing waves.

Help any one?

here are the pictures of the waves:

Linked Image
Linked Image
Linked Image

[ 01-15-2003, 09:56 AM: Message edited by: Goose ]

2000 Toyota Celica GT
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CID498
ECelica Staff
CID498 Jan 15, 6:18pm - #6863 

ECelica Staff
2000 Toyota Celica GT

Joined: Oct 2002
Posts: 929
So.Cal
I DONT QUITE UNDERSTAND HOW YOUVE HOOKED IT UP DID YOU HOOK IT UP WITH THE WIRES FOR THE STOCK UNIT?

"They don't make no seatbelt for the mind. So I can't buckle up for this ride!"
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Goose
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Goose Jan 15, 6:27pm - #6864 

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Norway
I am not sure what realy are you lokking after but

I connect the + wire from my lcd to the + wire from orginal toyota wires whitch are for car audio.

the - wire is from car body.

so the cd player and lcd are connected parall to eachother, but the waves come even if my cdplayer is turned on.

Is this what you ware asking for?

2000 Toyota Celica GT
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RicePowered
ECelica Staff
RicePowered Jan 15, 6:38pm - #6865 
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Posts: 2,677
South Jersey
I would first make sure you have a really good and solid ground (-) connection. Because a loose connection could cause the lines.

Also try hooking up the LCD by itself. In other words unhook the stereo and just run the LCD. If you dont have the lines then you know it is the stereo giving you the interferace. Is so, try running the lcd off of another fuse like the cig lighter or something.

If you still get the lines then you need a Alternator Noise Filter or Electronic Suppressor.

http://www.davidnavone.com/filters.html

Go a couple of items down this page to get a idea. Your local auto store or electronics store should be able to hook you up.

Hope this helps thumbsup

Oh this is one thing not to go cheap on.

[ 01-15-2003, 10:45 AM: Message edited by: RicePowered ]
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Goose
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Goose Jan 15, 6:47pm - #6866 

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Norway
Thx.

I truyed to connect lcd to the external battery, and then the picture was just fine, So it has to be the alternator..

2000 Toyota Celica GT
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Satoshi
ECelica Staff
Satoshi Jan 16, 12:02am - #6867 
2000 RED Toyota Celica GTS
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2000 Toyota Celica GTS

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Japan
Same things happened to me.
I use DC-DC converter to stabilize power supply for resolving it.

Satoshi from JAPAN
[Linked Image]
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Goose
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Goose Jan 16, 12:06am - #6868 

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Norway
where can you get dc-dc converter?

Martin

2000 Toyota Celica GT
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Satoshi
ECelica Staff
Satoshi Jan 16, 1:39am - #6869 
2000 RED Toyota Celica GTS
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2000 Toyota Celica GTS

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Japan
I bought them in electrnic parts shops in Japan. I think you can buy them in your country, because they are very common electrnic products.

Satoshi from JAPAN
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DJTyDogg
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DJTyDogg Jan 16, 2:24am - #6870 
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Nebraska
you could buy one at a RADIO SHACK or just about any place that sells TV DVD... any place for Audio or Video sells..
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