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745 PA amp [message #21561]

Sun, 28 September 2014 23:49

Iowa Boy
Messages: 767
Registered: June 2014

Senior Member

HELP! My amp took a crap last night. Loud crackling sound that sounded like the speakers were going to explode. Even with nothing plugged into the amp head and all volume control shut down, crackling sound is still present. Tried different speakers and still there. Something must be fried. Reverb tank is unhooked so know that's not the problem. Where do I start? Checked speaker cords and they work fine on other amps. Power cord has been replaced with grounded plug and resistor was removed. Up until now, this has been a great amp. Have a very good Fluke meter so point me in the right direction please.

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[Message index]

		745 PA amp By: Iowa Boy on Sun, 28 September 2014 23:49
		Re: 745 PA amp By: stevem on Mon, 29 September 2014 06:19
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 10:21
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 10:27
		Re: 745 PA amp By: chicagobill on Mon, 29 September 2014 11:58
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 12:37
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 12:45
		Re: 745 PA amp By: stevem on Mon, 29 September 2014 14:13
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 15:13
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 15:22
		Re: 745 PA amp By: fieldflower on Mon, 29 September 2014 16:54
		Re: 745 PA amp By: stevem on Mon, 29 September 2014 16:57
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 17:55
		Re: 745 PA amp By: stevem on Mon, 29 September 2014 18:29
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 18:37
		Re: 745 PA amp By: Iowa Boy on Mon, 29 September 2014 18:39
		Re: 745 PA amp By: fieldflower on Tue, 30 September 2014 10:33
		Re: 745 PA amp By: Jerrybass1955 on Tue, 30 September 2014 11:00
		Re: 745 PA amp By: Iowa Boy on Tue, 30 September 2014 11:16
		Re: 745 PA amp By: C4ster on Tue, 30 September 2014 12:10
		Re: 745 PA amp By: stevem on Tue, 30 September 2014 12:12
		Re: 745 PA amp By: Iowa Boy on Tue, 30 September 2014 13:02
		Re: 745 PA amp By: C4ster on Tue, 30 September 2014 13:42
		Re: 745 PA amp By: pleat on Tue, 30 September 2014 14:40
		Re: 745 PA amp By: stevem on Tue, 30 September 2014 14:54
		Re: 745 PA amp By: Iowa Boy on Tue, 30 September 2014 16:08
		Re: 745 PA amp By: stevem on Tue, 30 September 2014 19:01
		Re: 745 PA amp By: Iowa Boy on Tue, 30 September 2014 20:33
		Re: 745 PA amp By: pleat on Tue, 30 September 2014 20:58
		Re: 745 PA amp By: Iowa Boy on Wed, 01 October 2014 00:07
		Re: 745 PA amp By: stevem on Wed, 01 October 2014 06:11
		Re: 745 PA amp By: Iowa Boy on Wed, 01 October 2014 13:15
		Re: 745 PA amp By: stevem on Wed, 01 October 2014 15:35
		Re: 745 PA amp By: Iowa Boy on Wed, 01 October 2014 17:27
		Re: 745 PA amp By: Iowa Boy on Wed, 01 October 2014 17:59
		Re: 745 PA amp By: stevem on Wed, 01 October 2014 21:15
		Re: 745 PA amp By: Iowa Boy on Wed, 01 October 2014 21:53
		Re: 745 PA amp By: pleat on Wed, 01 October 2014 22:19
		Re: 745 PA amp By: pleat on Wed, 01 October 2014 22:22
		Re: 745 PA amp By: Iowa Boy on Wed, 01 October 2014 23:27
		Re: 745 PA amp By: stevem on Thu, 02 October 2014 06:30
		Re: 745 PA amp By: Iowa Boy on Thu, 02 October 2014 20:29
		Re: 745 PA amp By: chicagobill on Fri, 03 October 2014 15:51
		Re: 745 PA amp By: Iowa Boy on Fri, 03 October 2014 21:15
		Re: 745 PA amp By: chicagobill on Fri, 03 October 2014 21:51
		Re: 745 PA amp By: Iowa Boy on Fri, 03 October 2014 22:00
		Re: 745 PA amp By: stevem on Sat, 04 October 2014 07:10
		Re: 745 PA amp By: Iowa Boy on Sat, 04 October 2014 09:17
		Re: 745 PA amp By: stevem on Sat, 04 October 2014 19:29
		Re: 745 PA amp By: Iowa Boy on Sun, 05 October 2014 13:07
		Re: 745 PA amp By: Kustom_Bart on Sun, 05 October 2014 15:26
		Re: 745 PA amp By: Iowa Boy on Sun, 05 October 2014 17:56
		Re: 745 PA amp By: stevem on Mon, 06 October 2014 06:29

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