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#1
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Repair Laptop?
My daughter has a Compaq F767NR notebook with a Conexant High Definition
Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. |
#2
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Repair Laptop?
TVeblen wrote:
My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. What if this is a software problem ? You say in your description, the device is HDAudio. Those tend to have an output for each jack provided, and don't traditionally "share" signals. The AC'97 chips, on the other hand, shared Lineout with Headphone jack, and used side contacts on the Headphone jack, to connect or disconnect the Lineout. So the muting in that case, was mediated by side contacts on the jack. In the case of HDaudio, it is done via jack sensing. If a load is detected on the Headphone jack, that event is used by the software to disable the output to the Lineout jack. I downloaded an installer for a 221 (Waikiki) chip, and here are a couple registry settings. This hints at the software nature of control and available options. HKR,GlobalSettings,HpShutsOffRearSpeaker,1,00,00,0 0,00 ; Headphone does not mute rear speakers HKR,GlobalSettings,HpMode,1,01,00,00,00 ; Headphone is slaved to rear panel front channels Another possibility, is there is a power amplifier to drive the speakers. The HDaudio chip by itself, even if it had a headphone output capability, might not have enough output power for speakers, especially if your product documentation claims they are 2 watt speakers or the like (i.e. appreciable power). A separate chip may be driving the speakers. To give clean audio, it may be driven by a separate regulator. So there are other ways to interpret the symptoms besides a pair of side contacts on a jack failing. There could be more circuitry after the Hdaudio CODEC chip. Paul |
#3
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Repair Laptop?
"Paul" wrote in message ... TVeblen wrote: My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. What if this is a software problem ? You say in your description, the device is HDAudio. Those tend to have an output for each jack provided, and don't traditionally "share" signals. The AC'97 chips, on the other hand, shared Lineout with Headphone jack, and used side contacts on the Headphone jack, to connect or disconnect the Lineout. So the muting in that case, was mediated by side contacts on the jack. In the case of HDaudio, it is done via jack sensing. If a load is detected on the Headphone jack, that event is used by the software to disable the output to the Lineout jack. I downloaded an installer for a 221 (Waikiki) chip, and here are a couple registry settings. This hints at the software nature of control and available options. HKR,GlobalSettings,HpShutsOffRearSpeaker,1,00,00,0 0,00 ; Headphone does not mute rear speakers HKR,GlobalSettings,HpMode,1,01,00,00,00 ; Headphone is slaved to rear panel front channels Another possibility, is there is a power amplifier to drive the speakers. The HDaudio chip by itself, even if it had a headphone output capability, might not have enough output power for speakers, especially if your product documentation claims they are 2 watt speakers or the like (i.e. appreciable power). A separate chip may be driving the speakers. To give clean audio, it may be driven by a separate regulator. So there are other ways to interpret the symptoms besides a pair of side contacts on a jack failing. There could be more circuitry after the Hdaudio CODEC chip. Paul Hi Paul - I thought I had exhausted the diagnostics on the software side of things. (keep in mind that the speakers were working for a while, then stopped unexpectedly) The only thing I did not try was to install an updated driver - only reinstalled the original driver. But it certainly could still be a software issue, as always. Pity it can never be the simple solution - I was hoping it was just a jack switch but from what you say, probably not. I'll look into the separate power supply idea. But anything more involved than switching out a module goes beyond my comfort zone. Not running down to Radio Shack and getting out my soldering iron! |
#4
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Repair Laptop?
TVeblen wrote:
My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. Hard to say. when you plug earphones in do you hear anything from th speakers? If it's just bent connections it may be fixable but if not will probably need board level work to replace if you can find the part. |
#5
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Repair Laptop?
"Mike Painter" wrote in message ... TVeblen wrote: My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. Hard to say. when you plug earphones in do you hear anything from th speakers? If it's just bent connections it may be fixable but if not will probably need board level work to replace if you can find the part. There is no sound from the built in speakers under any configuration, not even clicks or static (It's dead Jim). Sound comes through the earphones just fine. |
#6
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Repair Laptop?
TVeblen wrote:
"Mike Painter" wrote in message ... TVeblen wrote: My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. Hard to say. when you plug earphones in do you hear anything from th speakers? If it's just bent connections it may be fixable but if not will probably need board level work to replace if you can find the part. There is no sound from the built in speakers under any configuration, not even clicks or static (It's dead Jim). Sound comes through the earphones just fine. Do you have a Linux LiveCD available ? Maybe you could boot with an alternate OS and enable the sound system and test it there. Paul |
#7
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Repair Laptop?
"Paul" wrote in message ... TVeblen wrote: "Mike Painter" wrote in message ... TVeblen wrote: My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. Hard to say. when you plug earphones in do you hear anything from th speakers? If it's just bent connections it may be fixable but if not will probably need board level work to replace if you can find the part. There is no sound from the built in speakers under any configuration, not even clicks or static (It's dead Jim). Sound comes through the earphones just fine. Do you have a Linux LiveCD available ? Maybe you could boot with an alternate OS and enable the sound system and test it there. Paul No, but I could get one. Daughter is back at school now. I will deal with this when she comes home in 3 weeks. Plenty of time to get a game plan together. |
#8
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Repair Laptop?
On Mon, 13 Apr 2009 17:31:04 -0400, "TVeblen"
wrote: "Paul" wrote in message ... TVeblen wrote: "Mike Painter" wrote in message ... TVeblen wrote: My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. Hard to say. when you plug earphones in do you hear anything from th speakers? If it's just bent connections it may be fixable but if not will probably need board level work to replace if you can find the part. There is no sound from the built in speakers under any configuration, not even clicks or static (It's dead Jim). Sound comes through the earphones just fine. Do you have a Linux LiveCD available ? Maybe you could boot with an alternate OS and enable the sound system and test it there. Paul No, but I could get one. Daughter is back at school now. I will deal with this when she comes home in 3 weeks. Plenty of time to get a game plan together. You could back up or image her system, then use the system's restore disc (if it came with one) to revert it to its original condition to see if it works that way. -- Michael Cecil http://home.roadrunner.com/~macecil/ http://home.roadrunner.com/~safehex/ http://home.roadrunner.com/~macecil/hackingw7/ |
#9
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Repair Laptop?
TVeblen wrote:
My daughter has a Compaq F767NR notebook with a Conexant High Definition Smart Audio 221 component. The built-in speakers stopped working. It is not muted, the sound works through the headphone jack, the drivers are updated, and the device is "working properly". I'm guessing that the switch that turns the speakers off when a headphone jack is inserted is broken or stuck in the open position. I don't have any experience working on laptops, but I do have the maintenance manual and it looks pretty straight forward (taking it apart). Has anyone here done this repair (No speakers)? Do you know if you can replace the phone jack alone? Or do you need to replace the sound board? Any tips or pointers would be greatly appreciated. One of the best ways I've found to rule out a possible Windows operating software problem is to boot one of the LiveCD's containing Linux. You can find a list of them at http://www.livecdlist.com/ . I have used the Ultimate Boot CD and Puppy Linux with success when testing suspect systems. If either of them give you sound out of the speakers it's a Windows issue, if not it is just about confirmed to be a hardware issue. |
#10
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Repair Laptop?
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