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NAD C352 Protect mode
NAD C352 Protect mode
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Old Yesterday, 07:32 AM   #61
Rick PA Stadel is offline Rick PA Stadel  United States
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Join Date: Apr 2017
Location: greater Kansas City
Trace the +18V from where it leaves the regulator board, and start disconnecting stuff until you find where that 123mA is going (0,5W @33 ohms = 4,06V / 123mA).

Do I understand correctly that the Volume motor drive still works EVEN WITH R245 open?

So some of those 8 traces that go off the page, bottom of page 6, only two of which have a signal name, are going to need sorting!

Sorry, this is going to have to do it for me tonight (02:33 in the morning locally). Will check back first thing tomorrow.

Cheers
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Old Yesterday, 08:13 AM   #62
Lynyrd is offline Lynyrd  France
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Yes Volume motor drive still works EVEN WITH R245 open
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Old Today, 02:04 AM   #63
Rick PA Stadel is offline Rick PA Stadel  United States
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Join Date: Apr 2017
Location: greater Kansas City
Any news yet on the destinations of those 8 traces that go off page 6 to the right?

A couple are labeled -- Trig and I/V -- but not sufficiently that I can sort it.

Regards

Last edited by Rick PA Stadel; Today at 02:12 AM.
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Old Today, 04:15 AM   #64
Lynyrd is offline Lynyrd  France
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Its difficult for me
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Old Today, 06:34 AM   #65
mdardeniz is offline mdardeniz  Turkey
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Join Date: Mar 2020
Location: istanbul
What is the hstory of c352? like, 2nd hand, droped, gived wrong voltage (220v or 110v). can you post a picture?



Did you solved +-50v supply voltage difference?


R245 in manuel 1/2 watt. Use 1watt? But, voltage over d119 must be near 18volt. Is it? If not you can control transistors there. Here +-18 volt supply for preamplificator. Preamplificator may be fault.
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