krell 300i amp. schematic needed

qno · 7th April 2007, 07:23 PM

Hi!
I need a krell 300i schematic
Please Help!

Netlist · 8th April 2007, 03:03 PM

Here you go:

http://www.diyaudio.com/forums/showt...68#post1153668

/Hugo

qno · 8th April 2007, 07:25 PM

Thanks for the shematics!
I need service manual for the KAV300i.
Please help me!

Netlist · 8th April 2007, 07:30 PM

Looking at the schematic, it seems like a fairly simple design. Apart from setting the bias there is nothing to trim or adjust. When you read on, you will also find the parts list and a lot more info, I'm sure.
To answer your specific question: I don't have a Service manual.

/Hugo

qno · 10th April 2007, 11:02 AM

Hi Netlist!
I have an amplifier type KAV-300i, SN 8796101623, ver. FP V1.2. This was the first of this type in Hungary.

It worked perfectly till now. Nowadays, it has the following trouble:
Approximately 10 minutes after turn on we can hear a crack from the left loudspeaker. After that the left side is lower and whenever we change the volume it gives click sounds. The membrane of the loudspeaker moves like it receives direct current, about 1-2VDC. During the changing of input and after turn off the loud speaker also clicks. When we turn the amplifier on after stand-by, the trouble remains. After putting out off circuit the amplifier works perfectly for 10-60 minutes.

Netlist · 11th April 2007, 07:30 AM

I assume you have a thermal problem. Without knowing the amp, a few things to check are solder joints, bolts and nuts (PSU cap screws tightened), leaking caps in the signal path.
I'll move your question to Solid State.

/Hugo

7th April 2007, 07:23 PM	#1
qno diyAudio Member Join Date: Apr 2007	krell 300i amp. schematic needed Hi! I need a krell 300i schematic Please Help!

8th April 2007, 07:25 PM	#3
qno diyAudio Member Join Date: Apr 2007	KAV300i service manual Thanks for the shematics! I need service manual for the KAV300i. Please help me!

10th April 2007, 11:02 AM	#5
qno diyAudio Member Join Date: Apr 2007	KAV300i Hi Netlist! I have an amplifier type KAV-300i, SN 8796101623, ver. FP V1.2. This was the first of this type in Hungary. It worked perfectly till now. Nowadays, it has the following trouble: Approximately 10 minutes after turn on we can hear a crack from the left loudspeaker. After that the left side is lower and whenever we change the volume it gives click sounds. The membrane of the loudspeaker moves like it receives direct current, about 1-2VDC. During the changing of input and after turn off the loud speaker also clicks. When we turn the amplifier on after stand-by, the trouble remains. After putting out off circuit the amplifier works perfectly for 10-60 minutes.

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8th April 2007, 03:03 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	Here you go: http://www.diyaudio.com/forums/showt...68#post1153668 /Hugo

8th April 2007, 07:30 PM	#4
Netlist diyAudio Moderator Join Date: Jan 2003	Looking at the schematic, it seems like a fairly simple design. Apart from setting the bias there is nothing to trim or adjust. When you read on, you will also find the parts list and a lot more info, I'm sure. To answer your specific question: I don't have a Service manual. /Hugo

11th April 2007, 07:30 AM	#6
Netlist diyAudio Moderator Join Date: Jan 2003	I assume you have a thermal problem. Without knowing the amp, a few things to check are solder joints, bolts and nuts (PSU cap screws tightened), leaking caps in the signal path. I'll move your question to Solid State. /Hugo

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