Need Help With TV
in [Repair]
|
From: Alex Thomm on 17 Jan 2010 23:51 In article <4b53ccad.40166021(a)news.eternal-september.org>, Zap says... > >Alex Thomm <Alex_member(a)newsguy.com> wrote: > >>In article <slrnhl6jcf.8f6.aznomad.3(a)ip70-176-155-130.ph.ph.cox.net>, AZ Nomad >>says... >>>Are the sound line outputs also dead? If not, you can run them to a >>>pair of amplified speakers. >> >>I'm not knowlegable enough to know if the line outputs are dead or not. Is >>there an easy way to find this out? > >That statement suggests to me that you have no business messing about >inside a TV. Well, certainly there are other things that I would rather mess about inside, but right now I'm concerned with the TV.
From: Arfa Daily on 18 Jan 2010 04:55 "Alex Thomm" <Alex_member(a)newsguy.com> wrote in message news:hj0p2p028t4(a)drn.newsguy.com... > In article <geP4n.22572$gm2.5629(a)newsfe18.ams2>, Arfa Daily says... >> >> >>"Alex Thomm" <Alex_member(a)newsguy.com> wrote in message >>news:hj0db501ful(a)drn.newsguy.com... >>> In article >>> <0c17c052-0415-4881-ad77-17dd4b7c095f(a)j19g2000yqk.googlegroups.com>, >>> captainvideo462002(a)yahoo.com says... >>>> >>>>On Jan 17, 2:47=A0pm, AZ Nomad <aznoma...(a)PremoveOBthisOX.COM> wrote: >>>>> On 17 Jan 2010 11:13:10 -0800, Alex Thomm <Alex_mem...(a)newsguy.com> >>>>> wrote= >>>>: >>>>> >>>>> >>>>> >>>>> >In article <slrnhl6mji.bki.aznoma...(a)ip70-176-155-130.ph.ph.cox.net>, >>>>> >AZ= >>>> Nomad >>>>> >says... >>>>> >>>>> >>On 17 Jan 2010 10:24:53 -0800, Alex Thomm <Alex_mem...(a)newsguy.com> >>>>> >>wro= >>>>te: >>>>> >>>In article >>>>> >>><slrnhl6jcf.8f6.aznoma...(a)ip70-176-155-130.ph.ph.cox.net>, >>>>> >>>= >>>>AZ Nomad >>>>> >>>says... >>>>> >>>>> >>>>On 17 Jan 2010 09:34:29 -0800, Alex Thomm >>>>> >>>><Alex_mem...(a)newsguy.com> >>>>> >>>>w= >>>>rote: >>>>> >>>>>In article <hivhja02...(a)drn.newsguy.com>, Alex Thomm says... >>>>> >>>>> >>>>>>I have a Philips TV model 32MF505W/17 =A0 >>>>> >>>>> >>>>>Actually, it's a 32MF605W/17 >>>>> >>>>> >>>>Are the sound line outputs also dead? =A0If not, you can run them >>>>> >>>>to >>>>> >>>>= >>>>a >>>>> >>>>pair of amplified speakers. >>>>> >>>>> >>>I'm not knowlegable enough to know if the line outputs are dead or >>>>> >>>not= >>>>. =A0Is >>>>> >>>there an easy way to find this out? >>>>> >>>>> >>Connect a pair of computer speakers, or run them to an aux input on >>>>> >>a >>>>> >>stereo. >>>>> >My computer speakers have a different connection. =A0I don't have a >>>>> >ster= >>>>eo on hand >>>>> >with an aux input. =A0Thanks for the suggestions. =A0I'll see what I >>>>> >can= >>>> dig up to >>>>> >test this out. >>>>> >>>>> Getting a rca to stereo miniplug adapter is trivial. =A0Any target, >>>>> walmart, radio shack will have them. =A0Even a well stocked truck stop >>>>> will have one. >>>> >>>>With all due respect, and I mean this in the most gentle way, if you >>>>don't know how to verify if you have a line output, how do you think >>>>you're going to troubleshoot an electronic circuit? >>> >>> With patience. I was a bit dense at first but I understand now. Thanks >>> to all >>> for the help. >>> >> >>If something went pop, and magic smoke was released, there's a good chance >>that you will find that the side has blown out of the audio output IC. > > I think that's what I already suggested in layman's terms. You did not suggest in your original post, in layman's terms or any other, that you knew it was likely to be the audio IC that you were looking for, or in exactly what way it would be damaged. You only said that you thought you would be looking for "something visibly burned". The reason that I told you that it was likely to be the audio IC, and that it may well have the side blown off, is that if you don't know what you are looking for, which clearly you don't, an IC damaged in such a way may not be immediately apparent. > >>To an experienced engineer with appropriate desoldering equipment, >>and the skills to use it, replacement of such an IC is a trivial task. >> >However, >>if you don't have those skills and equipment, which your post >>would suggest you don't, you will struggle to remove the old IC from >>the PCB, without doing damage to the tracking. > > What is tracking? > I'm afraid that, much as I like to encourage people in the field of electronic repair, in this case I have to agree with others, that perhaps you should not be attempting to repair a TV set. Without even the knowledge of what PCB tracking is (in this particular context, it refers to the copper "tracks" which interconnect items on the pcb), then I feel that taking on this repair, is beyond your abilities to do safely and reliably. >>Unless you feel confident to do this, > > I am plenty confident. What do you suggest? > If you want to go one stage further, follow the wires back from the TV's internal loudspeakers. They will (probably) land on the main PCB very near to the audio IC, although that is not guaranteed to be the case, either. It will likely be a flat plastic device with around 12 to 20 'staggered' pins on it, and be bolted to a heatsink. Be aware, though, that there could be other ICs in there as well, which match the same general description ... Arfa
From: PeterD on 18 Jan 2010 08:30 On 17 Jan 2010 10:24:53 -0800, Alex Thomm <Alex_member(a)newsguy.com> wrote: >In article <slrnhl6jcf.8f6.aznomad.3(a)ip70-176-155-130.ph.ph.cox.net>, AZ Nomad >says... >> >>On 17 Jan 2010 09:34:29 -0800, Alex Thomm <Alex_member(a)newsguy.com> wrote: >>>In article <hivhja02lis(a)drn.newsguy.com>, Alex Thomm says... >>>> >>>>I have a Philips TV model 32MF505W/17 >> >>>Actually, it's a 32MF605W/17 >> >>Are the sound line outputs also dead? If not, you can run them to a >>pair of amplified speakers. > >I'm not knowlegable enough to know if the line outputs are dead or not. Is >there an easy way to find this out? And you think you can fix it?
From: Alex Thomm on 18 Jan 2010 10:01 In article <jeW4n.18843$I67.12416(a)newsfe16.ams2>, Arfa Daily says... > > > >If you want to go one stage further, follow the wires back from the TV's >internal loudspeakers. They will (probably) land on the main PCB very near >to the audio IC, although that is not guaranteed to be the case, either. It >will likely be a flat plastic device with around 12 to 20 'staggered' pins >on it, and be bolted to a heatsink. Be aware, though, that there could be >other ICs in there as well, which match the same general description ... OK, I followed the wires back to the largest PCB. There are no heat sinks there. I think the best thing for me to do is post a photo of the circuit boards, but that will have to wait because my computer got infected with Anti Virus Live. What a mess! I can't do anything. It blocks everything that I try to do, and it still infects when I boot in safe mode. I'm typing this on my laptop and I have no way to transfer photos to it easily.
From: Alex Thomm on 18 Jan 2010 10:15
In article <ljo8l5ltvilhgfjpej9a02ns2j0hb3pr3p(a)4ax.com>, PeterD says... > >On 17 Jan 2010 10:24:53 -0800, Alex Thomm <Alex_member(a)newsguy.com> >wrote: > >>In article <slrnhl6jcf.8f6.aznomad.3(a)ip70-176-155-130.ph.ph.cox.net>, AZ Nomad >>says... >>> >>>On 17 Jan 2010 09:34:29 -0800, Alex Thomm <Alex_member(a)newsguy.com> wrote: >>>>In article <hivhja02lis(a)drn.newsguy.com>, Alex Thomm says... >>>>> >>>>>I have a Philips TV model 32MF505W/17 >>> >>>>Actually, it's a 32MF605W/17 >>> >>>Are the sound line outputs also dead? If not, you can run them to a >>>pair of amplified speakers. >> >>I'm not knowlegable enough to know if the line outputs are dead or not. Is >>there an easy way to find this out? > >And you think you can fix it? Trying to fix something is better than slingin insults, which isn't all that productive, yeah? |