Re: 2008 Grand Prix stereo display backlight
It looks like the voltage is 9.8/11.3V when taking readings across the broken bulb. I'm wondering if this changes any of your thoughts on bulb replacements (incandescent voltage or LED + resistance value)?
sgcb
Member
Last Activity: 06-13-2015, 01:10 PM
Joined: 04-11-2012
Location: iowa
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Re: 2008 Grand Prix stereo display backlight
thanks for the replies budm and kc8adu. I have some more information:
[LIST][*]The bulbs look to be wired in parallel - left pins are shorted together and right pins are shorted together.[*]left pins seem to be wired to ground - shorted to blue wire which runs back to main logic board. Assuming blue == ground[*]right pins are connected to a 3.6 Ω axial resistor. I'm not sure what the circuit looks like on the other side of the resistor due to goop, but it looks like a cluster of surface mount components[/list]
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Re: 2008 Grand Prix stereo display backlight
I do have a multimeter, but it looks like all three are burnt out (all three fail continuity test). Does this mean determining voltage across is impossible now? Or should I still be able to obtain voltage with a reading across a burnt out bulb? Testing will have to wait until tomorrow since I need to reconnect to car to power the boardLast edited by sgcb; 11-16-2012, 07:07 PM.Leave a comment:
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2008 Grand Prix stereo display backlight
Hi all
I hope I'm not abusing the system too much by posting something that may not be strictly under the description of "computer display"...
The problem is the display in my 2008's grand prix radio quit working some time ago. The radio works fine and the buttons seem to perform their functions, it is just the display that is supposed to allow me to see the tuned station/time. Though if the sun strikes the display at the right angle, I am able to make out what is shown, so my first thoughts were backlight issues.
I cracked open the radio... -
Re: al1916w two seconds to black
Wow so they actually do that in industy... I guess it does make practical sense after all.Leave a comment:
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Re: al1916w two seconds to black
Aha! With a stroke of luck I was able to remove f200 from the board and replace it!
I then hooked the thing up and it works!!! So exciting!
Thank you guys and badcaps forums
))
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Re: al1916w two seconds to black
I've recapped my board, but the surface mount fuse is giving me a hard time. I've tried alternating heat to the leads, but still it does not budge. Are there any tips/tricks that I'm missing? I'm starting to contemplate just soldering a new fuse right on top of the old one.Leave a comment:
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Re: al1916w two seconds to black
Okay, I now have a multimeter and an analog weller soldering station!
With the multimeter I'm able to provide some more information with the help of retiredcaps' guide on 2 seconds to black:
MOSFETs seem to be alright[INDENT]Q205 - 40T03GP[INDENT]s, g - ~14 MΩ
s, d - 0L
g, d - 0L[/INDENT]Q206 - 40T03GP[INDENT]s, g - 0L
s, d - 0L
g, d - 0L[/INDENT][/INDENT]
1 out of 3 fuses I found is blown (no sound during continuity test, 18MΩ resistance): F200 (circled in attachment)...Leave a comment:
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Re: al1916w two seconds to black
Caps match exactly despite the "AF" board model (mine is BF) The only thing differing seems to be the audio connector missing from my board AFAICT. With some additional light illumination I was able to confirm CE102 = 1000uF, 10V as well. CE108 will have to wait until I can remove it as it is wedged up close to the divider(?).Leave a comment:
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Re: al1916w two seconds to black
Hmm... are you working with a different board/revision? I know from searching for information on my problem, I encountered a couple different boards/revisions for this monitor.
Here are the values I can physically determine:[list][*]C204 - 220uF 25V[*]CE101 - 220uF 25V[*]CE103 - 1000uF 25V[*]CE104 - 1000uF 25V[*]CE105 - 2200uF 10V[*]CE109 - 220uF 25V[*]CE107 - 47uF 50V[/list]
Looking at the print on the board, I think mine is: DAC-19M005 BF, rev: 01A- Re: al1916w two seconds to black
Hmm... are you working
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- Re: al1916w two seconds to black
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Re: al1916w two seconds to black
I inspected the physical caps on the board and the markings on each do match the list explicity except for two (CE108, CE102) which are situated at angles that make it hard to determine with 100% certainty. Though since the others did match, I will assume the data sheet is correct for those two as well.
retiredcaps:
Thanks very much for the information and links. I did see the guide on troubleshooting 2 seconds to black and will investigate once I have the tools. I thought since the board photos exceed maximum...Leave a comment:
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al1916w two seconds to black
Hi
I have an Acer AL1916w monitor that is experiencing two seconds to black: no display when turned on, but a image can still be seen with a flashlight. Upon discovering this forum I decided I should attempt to fix it before tossing the thing immediately. And to preface I am somewhat of a newbie when it comes to electronics. Though I have taken two circuits courses at university. So I do have a grasp on the basics: ohm's law, circuits involving resistors/capacitors/inductors, but little other than that.
With that said, I did crack open the monitor and found a few...
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