You should purchase Perry Babins tutorial on amp repair.
This has every bit of info you will ever need, I have been meaning to purchase it but never have.
This has every bit of info you will ever need, I have been meaning to purchase it but never have.
Perry taught me how to use my scope. I had no clue when I got it. Thanks to his patience, I learned.
The 'troubleshooting with an oscilloscope' page of the tutorial should help.
The 'oscilloscope' page has additional information. If you have an older version, use the oscilloscope page on the car audio site. It's #73 in the directory.
The 'equipment' page covers scope probes.
A side note on the probes recommended previously...
They are suitable for most repair work but they are NOT Tektronix probes. The 6100 series Tektronix probes cost more and have the pins to force Tek scopes to display the correct vertical amplifier settings.
The 'oscilloscope' page has additional information. If you have an older version, use the oscilloscope page on the car audio site. It's #73 in the directory.
The 'equipment' page covers scope probes.
A side note on the probes recommended previously...
They are suitable for most repair work but they are NOT Tektronix probes. The 6100 series Tektronix probes cost more and have the pins to force Tek scopes to display the correct vertical amplifier settings.
I know its alot to read Perry, but what are your thoughts on posts 40-59?
What probes do you recommend to force the scope to read properly?
What probes do you recommend to force the scope to read properly?
Post the DC voltage on all pins of U11.
The probes that you suggested work well enough. The range-selector function is only important for those who don't understand how to use their scopes and won't take the time to learn how to use it. On the 465 scopes, it only forces the alternate window to light up. If you short the outer ring on the scope (around the BNC connector) to the metal part of the BNC connector, you will see how the lights switch.
The attached photos show the alternate light and probes with the pins. Bear in mind that most (maybe all) probes with these pins are fixed multiplier probes (no 1x/10x switch).
The probes that you suggested work well enough. The range-selector function is only important for those who don't understand how to use their scopes and won't take the time to learn how to use it. On the 465 scopes, it only forces the alternate window to light up. If you short the outer ring on the scope (around the BNC connector) to the metal part of the BNC connector, you will see how the lights switch.
The attached photos show the alternate light and probes with the pins. Bear in mind that most (maybe all) probes with these pins are fixed multiplier probes (no 1x/10x switch).
Attachments
HI Perry here is the voltages for U11
1: -7.74
2: 0
3: 1.849
4: -9.60
5: .018
6: -6.85
7: 8.24
8: 9.84
1: -7.74
2: 0
3: 1.849
4: -9.60
5: .018
6: -6.85
7: 8.24
8: 9.84
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