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Re: crossed polarity to Panasonic AG-455
If you did not damage the dc converter in the camera, you can check several micro fuses located on the regulator board. There are several diodes that assist in blocking reverse polarity applied to the camera. These diodes intentionally open these fuseable devices to protect the power supply and camera.
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Check the polarity of the adapter, if it isn't the original one. Even if you have the right voltage, it still has to have the mA or higher but, most important is the polarity. Most guitar pedals are wired backward on the plug. The positive is on the outside ring of the plug and negative is in the middle. There should be a picture or diagram somewhere on the unit close to the plug to find out. If it is backwards, it could have damaged it, maybe not though. If it is ok, cut the plug off and switch the wires and check it. After all, it's not working now, it couldn't hurt.
Your quickest & easiest option is to take your laptop with you to an electronics store like Radio Shack to find an adapter with the correct size plug, polarity, and voltage by looking & comparing your options directly from the info on the chassis. Radio Shack would be my first stop since I know they have a good system for cross referencing the various ac/dc plugs & adapters, and if you need assistance later on, they are easy to find.
Does the unit work in another vehicle? If not, first thing to
check is the fuse in the power cord. The
adapter (part that plugs into the lighter socket) has a replaceable 2 amp 3 AG
fuse inside it. The end of the adapter, which has the silver tip, unscrews to
gain access to the fuse. CAREFUL: Unscrew slowly! The tip contains a
spring which may fly out when disassembling. With use,
screw cap on plug may loosen. Retighten occasionally.
I would suggest to check the plug on the av700 and see the polarity, it might be indicated there.
In regards to using any adapter, you could as long is the same polarity. The original adapter is 6 Volts and 2 Amperes.
If you are trying to guess at an adapter, and plugging them in to see if they work, you run the risk of ruining your machine. With the blinking lights its not booting correctly, so I hope your not smelling smoke too. Nevertheless, you need a 9-12 dc output adapter (with I believe the negative on the inside). Your describing the input of 120V 60HZ, all of them say this since that is the power that is coming out of your wall socket. Look on the back of your machine at the connection and it will show you the polarity via a little diagram imprinted in the plastic(if the negative goes in the center or outside of the plug) This is the most important part, if it is backwards you will fry your machine, if you have not already.
The noise is most likely bad bearings in the video head assembly. No longer available from Panasonic. The b/w recording problem is most likely caused by a bad video board inside the camera. Unfortunately, the video board is also no longer available.
Hey I think it would difficult to find a manual for a AG-455, though being very similar to the AG-456 (which seems to be more popular) would you be happy with the manual for that model?
I downloaded the AG-456 manual from somewhere last year but unfortunately can't remember from where.
I do have the PDF file if you're interested though..
Would be happy to send to you if you're interested.