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ohms
Joined: 22 Jun 2009
Posts: 2
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 Posted: Mon Jun 22, 2009 3:24 pm Post subject: shorted resistor |
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| i need the value of R108 in sylvania md.6419ctc television.Thanks! |
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vtech
Joined: 08 May 2006
Posts: 1264
Location: USA
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| Posted: Mon Jun 22, 2009 3:58 pm Post subject: |
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Resistors do not "short out" like a semiconductor or a capacitor.
Same as funi chasis 6419ctc
In your case you are looking at a "zero ohm" jumper chip resistor which is suppose to check like a short.
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ohms
Joined: 22 Jun 2009
Posts: 2
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| Posted: Mon Jun 22, 2009 8:13 pm Post subject: shorted resistor |
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| ah,so thats why it read 0ohms.anyways the problem is that the remote won't function on this tv,but will work on another 6419ctc sylvania. what could be the problem on the tvand what should i check? |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Mon Jun 22, 2009 10:25 pm Post subject: |
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| I'd start with the IR sensor. It's cheaper than the micro. |
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vtech
Joined: 08 May 2006
Posts: 1264
Location: USA
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| Posted: Tue Jun 23, 2009 3:05 am Post subject: Re: shorted resistor |
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| ohms wrote: |
| ah,so thats why it read 0ohms.anyways the problem is that the remote won't function on this tv,but will work on another 6419ctc sylvania. what could be the problem on the tvand what should i check? |
Like minnie said, it is proly the remote receiver RCV101 ( shown above)
You should have VCC on pin3, Ground on 2 and if you scope pin 1, you can see a pulse train all the way to pin9 of micro IC111 when pushing any button on the remote.
When a remote receiver fails, in general, you may not get a pulse &/or low/distorted signal. While there is a possibility that it may be loaded down by the micro, it is rather rare and unlikely. |
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