Re: Sony KV-T25SZ8 TV problem


"David" bravely wrote to "All" (09 Jan 06 09:26:11)
--- on the heady topic of "Re: Sony KV-T25SZ8 TV problem"

Da> From: "David" <privateguy@xxxxxxxxxxx>
Da> Xref: core-easynews sci.electronics.repair:354617

Da> "Asimov" <Asimov@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
Da> message news:MSGID_1=3a167=2f133.0_43c1342c@xxxxxxxxxxxxxx
> "David" bravely wrote to "All" (08 Jan 06 09:25:07)
> --- on the heady topic of "Re: Sony KV-T25SZ8 TV problem"
>
> Da> From: "David" <privateguy@xxxxxxxxxxx>
> Da> Xref: core-easynews sci.electronics.repair:354497
>
> Da> I finally got around to having a look at the set today. I found a
> Da> ceramic capacitor on the AC (next to a 470 ohm resistor) side that
> was
> Da> open circuit.
> Da> The capacitor is marked 103P. Am I right in assuming that it is a 130
> Da> pF ??
>
>
> That cap is probably not 130pF.
> Capacitors are normally open circuit for DC, what do you mean by this?
>
> The marking 103 would mean 10 with 3 zeros, so this would mean it was
> a 10,000pF or a 0,01uF capacitor. However the letter P is a tolerance
> of +100/-0% so the cap may measure as much as 0,02uF. Finally, its
> thickness and diameter would give a rough approximation of its voltage
> rating, unless it is written.
>
> Typically, P tolerance 0,01uF or 0,1uF ceramic caps are used for
> bypassing and this means these would be unlikely to cause a major
> problem if they did fail with a reduced capacitance.

Da> I tested the capacitor and it measured -.598 on the 2uF range on
Da> my meter. I'm wondering if my meter is stuffed.


If the cap was across a diode it might be rectifying the test signal
and resulting in a negative reading. First try unsoldering just one
leg and then take the measurement.

A*s*i*m*o*v


.

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