Hello, im hoping to find somebody who has solved audio problems on this lcd tv,audio comes on for awhile ,then goes out after 10 mins very distorted sounding when on, any help would be appreciated!
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Re: Rca l42wd22 audio problems
If you hook up the powered speakers to the Auido line level output RCA RED/WHITE jacks, do you get the distorted sound there also? We need to find out if the problem is in the sound processing/ preamp/ or power amp section.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Rca l42wd22 audio problems
ok ill have to go to the radio shack and get a adapter to try , thanks ,ill repost back soonComment
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Re: Rca l42wd22 audio problems
i get nothing out of rca jacks, i get sound thru head phone jack but it goes out after 5 minutes , i power off the tv it comes back on then goes out after a minute,sound is better but still a hissing soundComment
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Re: Rca l42wd22 audio problems
Would you say it's very similar to what comes out of the speakers? It sounds like either power supply bad (low voltage to audio processor, possibly main board voltage regulator fault) or bad audio processor IC.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Rca l42wd22 audio problems
its weird i go into rca sound menu to set maxium volume , menu says to hold the ok button to test maxium volume and amp kicks in and internal speakers work, seems like sound gets better as tv warms or i power on and off tv ,Comment
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Re: Rca l42wd22 audio problems
i had a bad cap on the psu , im thinking i have more that needs testing.Comment
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Re: Rca l42wd22 audio problems
The bad cap could easily cause that. Have you checked the supply voltages coming from the PSU? e.g. a low or unstable 5V or 12V might cause this.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Rca l42wd22 audio problems
im getting 11.89 volts going into the audio ampComment
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Re: Rca l42wd22 audio problems
Have you checked other power supply voltages too, like 5V and 24V?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Rca l42wd22 audio problems
i just saw this fix with the same symptoms,Comment
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Re: Rca l42wd22 audio problems
this tv has been in the shop before when first bought about 3 yrs ago, fuse mod has already been doneComment
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Re: Rca l42wd22 audio problems
i bought set off guy at worked that told me it was put in the shop shortly after he bought setComment
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Re: Rca l42wd22 audio problems
maybe cold solder joint to bottom fuse?Comment
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Re: Rca l42wd22 audio problems
Perhaps new fuse has failed again?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Rca l42wd22 audio problems
top fuse reads good , repair man that did mod , put too much solder on top, cant tell if he got it good on bottom.Comment
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Re: Rca l42wd22 audio problems
thanks tom! tv working good nowComment
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Re: Rca l42wd22 audio problems
my RCA L42WD22 is doing the same thing. what did you do to fix itComment
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Re: Rca l42wd22 audio problems
my sound comes on for a few minutes but goes out. if you turn the tv off it comes back on for a few minutesComment
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The Problem: This player has a toggle switch to select between Stereo, Mono R, and Mono L. Regardless of the setting it outputs the sound to both the L&R audio jacks. In the Mono R position, the audio output level is normal (from both the L and R audio output jacks), in the Stereo position the audio output is about half the volume, and in Mono L, it's about 3/4 the volume. Something about putting it into Stereo mode is causing the volume to drop significantly and I can't figure it out.
The player processes the audio signal using two different reference frequencies. The "R"... -
Hi all,
Hobbyist repairman here so I've reached the end of my troubleshooting abilities. The audio out of the FL+FR speakers is very distorted and almost unintelligible. BUT! That only applies to digital audio; Analog plays through just fine. The distortion carries to headphones if those are plugged in with audio from a digital source. All other speaker channels play fine regardless of digital or analog.
Previous experience with similar distorted audio has been bad resistors on the amp output - Could bad smd resistors on the hdmi board cause the same problem? My understanding... -
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Hopefully someone here knows about βvintageβ game systems.
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so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
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