Vintage HiFi Audio Forum
Repair / Help Forum => Repair / Help => Topic started by: gdv on November 28, 2019, 10:54:27 AM
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Again, Happy Thanksgiving....
My brother & I were talking this morning about his repair issue...
If anyone has any insight or experience, replies would be greatly appreciated...
Thank you so much for considering....
George
Mackie HR 824 Studio Monitor will not turn off when in the auto off mode.
Have tried cleaning all switches and pots and this worked for a couple of days for one of the units. Re-cleaning switches again has not helped. One of the Mackies has a rear heat sink which gets quite warm when it fails to power off. Help is needed...
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Might there be a signal leaking to it?
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One "bump" into December... :)
Hope everyone had a great Thanksgiving...
George
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George,
Does this still happen if the speaker is disconnected from any input? Can you hear any hum or high frequency oscillation in the bad unit?
Ron
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Klaus & Ron, thanks for comments... Will pass on to my brother for response...
Thanks again...
George
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Reply from bro...
No signal; input disconnected
No Hum or audible hi freq Have not checked it with a scope for >20khz freqs
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So, it still fails to power off when disconnected from a signal source?
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Correct...
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I am no tech, but a stab in the dark leads to a possible bad sensor