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Modular Amps
Egnater / Randall Modular Amps
RM4 Problem is back
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<blockquote data-quote="eedude" data-source="post: 74193" data-attributes="member: 2549"><p>okay, my 2 cents. FWIW...:idea: </p><p></p><p>Before you launch in and start wily-nilly changing out parts you need to isolate the defect to a particular subsystem (i.e. power supply, input stage #1, effect loop buffer circuit, module switching infrastructure) . You then take some measurements or perform other experiments to isolate down to the component(s). </p><p></p><p>You have to be ready to rip you RM4 apart enough so that you can get to all the circuits that can be in question. You need to have enough electronics knowledge that you can reverse engineer circuits (in a basic sense) so that you know what is what... you need to be ready for some home-brew debugging techniques, like tapping the signal off a points in the flow and run them off to another amp to be monitored...you should have some idea as to voltage values to expect at various parts of the circuit (i.e cathodes should at ~1V, plates are around 200V, switching logic uses 5V, etc...)</p><p></p><p>are you ready?</p><p></p><p>Btw, caps don't kill people, people kill people... or something like that I saw it on a bumper-sticker once...</p></blockquote><p></p>
[QUOTE="eedude, post: 74193, member: 2549"] okay, my 2 cents. FWIW...:idea: Before you launch in and start wily-nilly changing out parts you need to isolate the defect to a particular subsystem (i.e. power supply, input stage #1, effect loop buffer circuit, module switching infrastructure) . You then take some measurements or perform other experiments to isolate down to the component(s). You have to be ready to rip you RM4 apart enough so that you can get to all the circuits that can be in question. You need to have enough electronics knowledge that you can reverse engineer circuits (in a basic sense) so that you know what is what... you need to be ready for some home-brew debugging techniques, like tapping the signal off a points in the flow and run them off to another amp to be monitored...you should have some idea as to voltage values to expect at various parts of the circuit (i.e cathodes should at ~1V, plates are around 200V, switching logic uses 5V, etc...) are you ready? Btw, caps don't kill people, people kill people... or something like that I saw it on a bumper-sticker once... [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
RM4 Problem is back
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