| Re: K200-B1: Bright channel noisy, Normal = perfect [message #6197 is a reply to message #6196] |
Wed, 05 October 2005 17:12   |
chicagobill
Messages: 2006
Registered: April 2003
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Senior Member |
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John:
Yes the pre-amp circuit for the bright channel is the board that is mounted via the four front panel controls. And, you are also correct in assuming that the problem lies in the bright channel circuit, as there is no problem with the normal channel.
A little more checking and you might be able to better pinpoint the problem area in the circuit. Is the noise better or worse if the bright switch is on or off? Does the noise get better or worse when the volume or tone controls are set at different levels? All of these factors can help to isolate the source of your problem.
As far as doing the work yourself or not, you need to decide if this is something that you can handle. It is not that difficult, but if it is beyond your abilities, you can do damage to the amp and/or yourself.
If you decide to try it, you will need a small wattage soldering iron, some kind of solder removal tool (vac or braid), electronic rosin core solder, and a source for electronic parts. You will also need a small assortment of hand tools (pliers, screwdrivers, etc.). Never work on the amp while it is plugged into the wall socket. And never do anything that you are not sure of.
Bill
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