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HVAC Bulb Replacement - How To?

 
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cprince
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PostPosted: Sat Mar 17, 2012 1:27 pm    Post subject:  HVAC Bulb Replacement - How To? Reply with quote

With all due respect to the service that one of the members here provides.... I would like to find a "how-to" for the H-VAC bulb replacement. Every search of this forum has turned up only advise to send it in to a service...

I would rather do it myself.

What I am looking for is the tear down and possibly the schematics of the board so I can get the polarity right!! I thought I remember seeing a complete guide a few years ago on here... but I can no longer find it.

As usual, any and all help would be welcomed and appreciated.

Craig
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00impala123
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PostPosted: Sat Mar 17, 2012 5:22 pm    Post subject:   Reply with quote

Inb4 > youll mess it up, send it to bbe.

Ill try and dig up pics

http://www.naioa.com/v2/module.....mp;t=34185

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bbengineer
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PostPosted: Sat Mar 17, 2012 6:31 pm    Post subject:   Reply with quote

He has an 04 which is completely different from the 00-03 so those pictures aren't going to help

To disassemble
- Remove the fan speed and mode selection knobs and the two slider knobs
- Remove the three screws hold the unit together
- Remove the front circuit board from the housing

I don't have a picture, but IIRC the positive side is the one closer to the harness connecting the two circuit boards together.

The 04-05 is a better quality PCB (there are actually 2 version as well) so not nearly as fragile as the 00-03, but still quite fragile

BBEngineer

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cprince
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PostPosted: Sat Mar 17, 2012 7:03 pm    Post subject:   Reply with quote

@ 00impala123

Insane shot of the open faced sandwich that was the dash board!! Scary!


@bbengineer
Please know that me wanting to do it myself is nothing in the way of a slight at you and your services!!! If I were to take it (along with my cluster) to anyone, I wouldn't even think of taking it anywhere else.

I am just that stubborn type of person who wants that sense of satisfaction of doing it myself.

I have constructed auto roll boards for the old school satellite systems for DiSH... when DTV was hack-able my own HU-Loaders... solder capacitors on all types of 'lectronics... so I figure I can do this without much trouble.

I keep thinking (perhaps foolishly) that the tear down of the dash board is going to be the hardest part. I had read about another member who said springs popped out and flew around in his car when he took his apart!


Again... any and all help is welcomed!

Craig
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00impala123
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PostPosted: Sat Mar 17, 2012 9:49 pm    Post subject:   Reply with quote

@BBE..whoops didnt realize he had an 04...just figured that was one of the thread he previously saw.

@cprince...the dash really is not bad at all. There should be no springs flying out as long as you don't take apart the headlight switch (which you dont have to touch to get the dash off). Just follow the walkthrough on impalahq and youll be good. And a side note, I know BBE said your board isnt as touchy, but I fried an HVAC board and just replaced it..its staying stock and half light until i get a little better at soldering lol Just be sure to give it plenty of cool off time inbetween attempts and youll be fine

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HotSauce6226
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PostPosted: Sat Mar 17, 2012 10:19 pm    Post subject:   Reply with quote

I have pics. Ill have to find them though

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2001Ls
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PostPosted: Sat Mar 17, 2012 10:25 pm    Post subject:   Reply with quote

I made how to with pics.... here ->

http://www.naioa.com/v2/module.....mp;t=46327

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PostPosted: Sun Mar 18, 2012 6:47 am    Post subject:   Reply with quote

2001Ls wrote:
I made how to with pics.... here ->


Once again for those who have trouble with reading comprehension... the 00-03 HVAC is completely different than the 04-05 so the pictures are USELESS (not to mention that your technique is complete wrong as well...)

Just an FYI, there are no springs in the 04-05 HVAC as it's completely electronic (the 00-03 is half electronic, half mechanical)

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2001Ls
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PostPosted: Sun Mar 18, 2012 10:08 am    Post subject:   Reply with quote

why don't you throw a pic up?

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PostPosted: Sun Mar 18, 2012 11:20 am    Post subject:   Reply with quote

Of the PCB? I don't have one.... I've done so many I know the pins layout as soon as I open the unit

But it's pretty obvious from the back that it is different (not to mention that I stated it was different just a few posts prior)



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HotSauce6226
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PostPosted: Sun Mar 18, 2012 8:05 pm    Post subject:   Reply with quote

2001ls.You posted a pic, but how do you know which is pos or neg? Laughing
Thats if you want LEDs

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2001Ls
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PostPosted: Mon Mar 19, 2012 12:08 am    Post subject:   Reply with quote

I'm not a master...just thought it could help. You win.

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PostPosted: Mon Mar 19, 2012 8:52 am    Post subject:   Reply with quote

Theres nothing wrong with the pics, it will help out alot. Just you have polarity with LEDs

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