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Re: Troubleshooting a 250 model 1 Bass amp [message #27402 is a reply to message #27401]

Thu, 27 June 2019 21:03

Byteviolator
Messages: 13
Registered: June 2019

Junior Member

I have plus and minus 11.66V on the terminal points so the supply looks Ok.
Lots of issues with the ICs however

PC5066

1. -11.48V 14. 11.73V
2. 13. -10.72V
3. 12.
4. 11.
5. 10.
6. .09V 9. -.33V
7. -11.72V 8. -8.23V

PC5067

1. 3.08V 14. 11.66
2. 13. -11.22
3. 12.
4. 11.
5. 4.2mV 10.
6. .22V 9.
7. -11.66 8. -.69

Could other components cause these weird measurements or am I looking at 2 bad ICs?

Thanks for your help.

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[Message index]

		Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Mon, 24 June 2019 20:00
		Re: Troubleshooting a 250 model 1 Bass amp By: stevem on Tue, 25 June 2019 06:08
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Tue, 25 June 2019 17:04
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Tue, 25 June 2019 17:19
		Re: Troubleshooting a 250 model 1 Bass amp By: chicagobill on Wed, 26 June 2019 13:29
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Wed, 26 June 2019 16:04
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Wed, 26 June 2019 16:38
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Thu, 27 June 2019 07:37
		Re: Troubleshooting a 250 model 1 Bass amp By: chicagobill on Thu, 27 June 2019 15:47
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Thu, 27 June 2019 21:03
		Re: Troubleshooting a 250 model 1 Bass amp By: chicagobill on Thu, 27 June 2019 23:50
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Fri, 28 June 2019 20:28
		Re: Troubleshooting a 250 model 1 Bass amp By: chicagobill on Sat, 29 June 2019 00:15
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Mon, 01 July 2019 11:25
		Re: Troubleshooting a 250 model 1 Bass amp By: stevem on Mon, 01 July 2019 12:17
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Mon, 01 July 2019 15:29
		Re: Troubleshooting a 250 model 1 Bass amp By: chicagobill on Mon, 01 July 2019 13:17
		Re: Troubleshooting a 250 model 1 Bass amp By: stevem on Tue, 02 July 2019 06:11
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Tue, 02 July 2019 17:11
		Re: Troubleshooting a 250 model 1 Bass amp By: chicagobill on Tue, 02 July 2019 20:07
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Tue, 02 July 2019 22:07
		Re: Troubleshooting a 250 model 1 Bass amp By: stevem on Wed, 03 July 2019 05:38
		Re: Troubleshooting a 250 model 1 Bass amp By: Byteviolator on Thu, 04 July 2019 17:51
		Re: Troubleshooting a 250 model 1 Bass amp By: stevem on Fri, 05 July 2019 06:55

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