Just got my BrianGT LM4780 boards in and have a problem

Audiophilenoob · 28th July 2005, 10:30 PM

I noticed that there is no place on the boards for the 10k ohm mute resistor... or for the 2.7 ohm 2w Panasonic Resistor (zobel)

where do these belong or am I missing something?

Audiophilenoob · 29th July 2005, 12:35 AM

anyone??? there are 2 of those zobel Panasonic resistors per board

Audiophilenoob · 29th July 2005, 02:33 AM

Alright I figured out where the Zobel resistors are placed (right below the BC zobel caps)... but there isn't any space for the Mute resistor...

do I need to attach it to the underside of the chip or something?

ken.berg · 29th July 2005, 02:36 AM

The mute resistor is a pair of SMT pads on the back side of the board under the body of the 4780.

The Zobel resistors mount in the holes just below and outside the Zobel capacitors.

Audiophilenoob · 29th July 2005, 04:23 AM

Quote:

Originally posted by ken.berg
The mute resistor is a pair of SMT pads on the back side of the board under the body of the 4780.

The Zobel resistors mount in the holes just below and outside the Zobel capacitors.

many thanks... I see that pad now... thanks

28th July 2005, 10:30 PM	#1
Audiophilenoob diyAudio Member Join Date: May 2005 Location: NC	Just got my BrianGT LM4780 boards in and have a problem I noticed that there is no place on the boards for the 10k ohm mute resistor... or for the 2.7 ohm 2w Panasonic Resistor (zobel) where do these belong or am I missing something?

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29th July 2005, 12:35 AM	#2
Audiophilenoob diyAudio Member Join Date: May 2005 Location: NC	anyone??? there are 2 of those zobel Panasonic resistors per board

29th July 2005, 02:33 AM	#3
Audiophilenoob diyAudio Member Join Date: May 2005 Location: NC	Alright I figured out where the Zobel resistors are placed (right below the BC zobel caps)... but there isn't any space for the Mute resistor... do I need to attach it to the underside of the chip or something?

29th July 2005, 02:36 AM	#4
ken.berg diyAudio Member Join Date: Nov 2003 Location: Tempe, AZ	The mute resistor is a pair of SMT pads on the back side of the board under the body of the 4780. The Zobel resistors mount in the holes just below and outside the Zobel capacitors.