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| I can't help you directly with your problem, but wanted to add a note of caution.
If a problem in your current OBXa has been caused by a defective component that has then taken something else out, swoppertronics will take your functioning machine into the dumpster too. any swopping of parts that are not clearly marked as to which was the good one is doomed to disappoint. A visual inspection and comparison to an identical machine is a great help to an acute observer, but unless you have a clue what might cause your symptoms you may be heading into darkness. The service manuals of equipment from this era are essential but an understanding of the various functions of many of the components involved is assumed. Another assumption was the age of the components. I'm not sure anybody actually knew what was going to happen when 1980s electronics aged 40 years. The connectors aren't really that good either, and these may need a work-around requiring a good level of wiring skills suitable for the particular style of construction used. An experienced service engineer who specialises in your particular instrument is required. Repeat - Required. The technique of swopping with a known good part was good in its time and place, but I have to remind myself when I first open a defective item just which techniques are applicable. A 12AX7 swop for example doesn't usually put anything in any great danger, but a shorted power tube can destroy yourMarshall tube sockets, or MK2 Boogie or V4B output tube pcb if you move it around. Enthusiasm and confidence are a good thing to have on your side, but caution and care are often required to balance them. Nobody can expect instant success every time without studying the problem and considering the options. If you are used to a power tool, doing things by hand seems pedestrian, but it could be better approach and yield a superior result. Your decision, but sometimes a small amount of thought can prevent a disaster. --- On Tue, 4/12/12, wesleyknick <wesknick@...> wrote: |