Hi ,
26 VAC has been put on a DOME Cameras instead of 12DC.4 SMT parts blewed up . I have a working one that I can read the marking but I cannot find what are the value of them.
Here are the 4 parts (i.e:marking on the parts) :
EJ6 d.....Seems to be a SMT capacitor DA7 J.....Seems to be a SMT capacitor
6R8.....I'm assuming a 6.8 Ohms resistor 2L.....Very small SMT diodes (2 pins)These parts are connected to the 12V input.
Can anybody help with the value of these components ?
Tks...
but
try the IC Master on the web it will give you equalivent parts from other manufacturers, pin outs etc. function etc.
On Tue, 19 Aug 2008 10:32:38 -0400, "Benoit Pothier" put finger to keyboard and composed:
Not 100% sure about the caps, but you can verify them for yourself here (pages 11 & 12):
20V 10uF
FWIW, this 3-pin double diode also uses the 2L marking code:
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
Tks a lot.
For the L2 diode , it's not a SOT23 pkg.
It's a 2 pins diode.
I tried to find a relataion on the net but without success.
"Franc Zabkar" a écrit dans le message de news: snipped-for-privacy@4ax.com...
On Wed, 20 Aug 2008 06:50:03 -0400, "Bentech" put finger to keyboard and composed:
L2 or 2L ?
It would help if you traced the circuit. Sometimes designers place a reverse biased rectifier diode, eg 1n4001, across the input terminals for reverse polarity protection. An AC input voltage would have short circuited it.
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
It's marked 2L on it.
It's in serie with the 12 volts line.
"Franc Zabkar" a écrit dans le message de news: snipped-for-privacy@4ax.com...
On Thu, 21 Aug 2008 13:29:44 -0400, "Bentech" put finger to keyboard and composed:
In that case it is probably a 1A rectifier which provides non-destructive reverse polarity protection. You should be able to use a 1N4001 if you can make it fit. The diode's current rating will be reflected in the rating of the supply.
Have you verified whether the camera uses a regulator further downstream? If it doesn't, then you can expect more damage elsewhere.
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
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