I have a pair of ESL 63 USA pro monitors. The right speaker is making a popping noise when it is powered 'on' even with no signal to it. Does this indicate that one of the panels may be blown?
Could also be a cap. Whatever it is, you must check out the circuit. If you're not experienced & qualified to do this, do NOT do anything. Rahter, get a qualified electronics person to do the checking -- there are high voltages in there!
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