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shorted resistor

 
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ohms



Joined: 22 Jun 2009
Posts: 2

PostPosted: Mon Jun 22, 2009 3:24 pm    Post subject: shorted resistor Reply with quote

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

PostPosted: Mon Jun 22, 2009 3:58 pm    Post subject: Reply with quote

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

PostPosted: Mon Jun 22, 2009 8:13 pm    Post subject: shorted resistor Reply with quote

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

PostPosted: Mon Jun 22, 2009 10:25 pm    Post subject: Reply with quote

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

PostPosted: Tue Jun 23, 2009 3:05 am    Post subject: Re: shorted resistor Reply with quote

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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