Nutone IMA4006 intercom shows clock/tuner but no audio


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Old 12-16-18, 04:58 PM
K
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Nutone IMA4006 intercom shows clock/tuner but no audio

Hi!
It's been a while.
My sister's intercom (Nutone IMA3303) has a main station that is showing an accurate clock and doing fine with showing the radio station. But I hear nothing from the speaker. I go to the base station and nobody hears anything. Before I spend time on the amp board does anyone have an idea if something else is awry?

THX and Happy Holidays!

KT

Moderator note: title corrected.
 

Last edited by PJmax; 12-16-18 at 05:19 PM.
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Old 12-16-18, 05:08 PM
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OOPS is IMA4006

Clarification; the unit is an IMA4006. Sorry.
 
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Old 12-16-18, 05:21 PM
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More than likely it's going to be a problem on the board. If it's fairly old the capacitors have dried up with age. I'd start on the board by checking power supply voltages.
Check the speaker for continuity too.
 
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Old 12-16-18, 05:53 PM
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Busted caps are easy to spot so it'd answer my prayers. Not that everything else could go bad. Thanks!
 
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Old 12-16-18, 06:03 PM
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There used to be some videos on You Tube by Northside Service Company on Nutone repairs.
 
 

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