Re: LH series ATC display. Was: '02 300M: Code P0700 and...
- From: Bill Putney <bptn@xxxxxxxxx>
- Date: Fri, 13 Jun 2008 18:09:47 -0400
Percival P. Cassidy wrote:
On 05/31/08 10:56 am Bill Putney wrote:
The ATC display intermittently going blank is a very common problem on the LH cars. I would think that woujld be covered under the extended warrranty too - hopefully it will decide to act up when they're looking at it - perhaps a gentle banging with the fist (on the ATC head unit) will cause it to act up. Or perhaps pushing on the display with your thumb will turn the problem on and off - often it will.
If you want to take care of it yourself:
Solder cracks on surface mount parts on the p.c. board are the problem. Some (myself included) have been successful at resoldering the loose parts, but you can buy the entire ATC head unit all day long for under $50 including shipping from junk yards. Plus, if you don't have the tools or skills to do very delicate soldering, you'll ruin it anyway.
<snip>
I am not averse to soldering, but how do I remove the display unit to work on it?
Perce
You pull the woodgrained radio bezel rearward from the dash. Start out by removing the ashtray (press down on the tab inside the ashtray) and de-mating the cigarette lighter socket and traction control (if it has it) switch connectors. Then pull the bezel away from the dash at the bottom and work your way up to the top. The ATC control unit is attached to the bezel from the front (non-visible) side with screws. The connector has a tab on one side that you push in to release and de-mate the connector from the control unit. There are some screws to disassemble it - you will see a small fan built into the unit too.
I will warn you that the metal ends of the surface mount components, as well as the p.c. board traces they attach to are fragile - they don't stand up well to excess heat or mechanical stress.
On mine, the bad joints were on those blue resistors in this photo: http://images14.fotki.com/v336/photos/4/42816/3749556/IMG_0834b-vi.jpg
Also - you may not even be able to see the cracks in the solder. The only way I knew where they were was connecting the p.c. board back up to the car out of the case and pressing different places until I found the place that I could press on to turn the problem (the display lighting) on and off.
Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my address with the letter 'x')
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- References:
- LH series ATC display. Was: '02 300M: Code P0700 and...
- From: Percival P. Cassidy
- LH series ATC display. Was: '02 300M: Code P0700 and...
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