orion cobolt 2105

mike49504 · 5th February 2010, 05:40 PM

I dont understand this amp.

I pulled all the outputs out of it and changed the drivers in it. Upon trying to power it up it draws excessive current. Even with the outputs out of the amp its reading shorted on the output pads between legs 1 and 3. Wondering what i should check next??

I also checked the diodes they are testing fine also

Perry Babin · 5th February 2010, 05:45 PM

Do you read a short or simply a low resistance?

Does it pull excessive current if you remove the rectifiers?

mike49504 · 5th February 2010, 06:14 PM

if i pull the tip 31 and 32 c's it doesnt draw current then. But it still shows legs 1 to 3 on the outputs shorted not low resistance but shorted

Perry Babin · 5th February 2010, 07:54 PM

I've never seen one of these. I have no clue what those transistors are being used for. If you can't find the fault and need more help, post some photos of the inside of the amp.

5th February 2010, 05:40 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	orion cobolt 2105 I dont understand this amp. I pulled all the outputs out of it and changed the drivers in it. Upon trying to power it up it draws excessive current. Even with the outputs out of the amp its reading shorted on the output pads between legs 1 and 3. Wondering what i should check next?? I also checked the diodes they are testing fine also

5th February 2010, 05:45 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you read a short or simply a low resistance? Does it pull excessive current if you remove the rectifiers? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

5th February 2010, 07:54 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I've never seen one of these. I have no clue what those transistors are being used for. If you can't find the fault and need more help, post some photos of the inside of the amp. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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5th February 2010, 06:14 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	if i pull the tip 31 and 32 c's it doesnt draw current then. But it still shows legs 1 to 3 on the outputs shorted not low resistance but shorted

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