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Post by rockolarick on Jun 9, 2021 21:34:29 GMT
Hey Darren, no that is the thing you turn with your fingers if you wanted to manually advance the gripper motor.
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Post by Ron Rich on Jun 9, 2021 21:51:18 GMT
Hi Darren,
What "gear" are you speaking of ? Is it the end of the armature, in the above photo, which sticks out of the rear of the motor ? Ron Rich
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Post by whammoed on Jun 10, 2021 14:56:46 GMT
Ron,
Yeah, Rick explained what I was looking at. I was cornfused.
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Post by Ron Rich on Jun 10, 2021 15:30:35 GMT
Hi Darren,
Welcome to my world of cornfuzzion ! That is called a "knerraled" (sp?) post-- Ron Rich
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Post by rockolarick on Jun 10, 2021 21:08:45 GMT
Norman, Ron and Darren, just wanted to thank you guys for taking the time out of your days to answer people's questions on here. There is no way I could be where I am at with this Jukebox if it weren't for your guys' expertise and willing to pass it along to us rookies! Norman, thanks for suggesting the 1458 op amp. I received them today and works like a champ! And thanks again Darren for suggesting the cartridge. I finally have sound out of both speakers. Ron, thanks for suggesting to take apart and clean the gripper motor. After putting it back together and testing it, I can still hear the static, but it is not nearly as loud as it was before. Even a few times it doesn't make any noise! So it appears that is the issue, but not sure if I want to try to take it apart again and clean it more. What do you think in the motor is causing the static? bad ground connection, brushes? just curious. My very last issue I have had with this thing is humming coming from the speakers right when I turn it on and stays humming. It comes out of both speakers and does not get louder when I adjust the volume. I also have removed the input wire to the cartridge and still hums. I have read on other forums and this appears to be a 120hz hum. Should I be looking at the capacitors on the power supply board?? if so, can I use a multimeter to test these? or should I be looking at something else? My amp lingo isn't the best, so if you could explain what to look for in rookie terms, that would be great.  |
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Post by Ron Rich on Jun 10, 2021 23:06:13 GMT
If you have not done so-- replacing the lytic and "paper" type caps is probably a good idea. Is that phono line cord grounded--plugged into a good grounded socket ? I
Look for a brass nut ( 8/32,I think) with a bunch of green, ground lines, going to it-- Remove it and clean all of the lugs-- replace them on the stud and tighten it down tightly- IF, by chance, someone's changed that nut to a steel nut-- change it back to brass ! Ron Rich
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Post by rockolarick on Jun 11, 2021 12:35:07 GMT
On the plug, it looks like there are only 2 prongs. I have 3 wires going into the power supply, but it appears the ground prong on the plug must have fallen off! I will cut off the plug and replace it.
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Post by Ron Rich on Jun 11, 2021 12:48:06 GMT
It probably did not "fall off"-- some bozo pulled it off as he did not have the proper grounded wall socket-- Be 100 % sure to wire the new plug correctly !! Ron Rich
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Post by rockolarick on Jun 11, 2021 17:30:07 GMT
ok, plug replaced, still hums, but feel more comfortable that it has a ground. The ground came in and was screwed to the whole power supply box at the top. All of the grounds were a group of spade connections at the bottom of the power supply. As far as the hum, I included a pic of the power supply in the amp. It does look like the 2 black and orange capacitors have been replaced before. I didn't see any caps that had paper on them. Can you explain what you mean by lytic? Is that on the power supply in the amp? I looked in the manual and didn't see anything called that. postimg.cc/1gnSxhC7 |
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Post by Ron Rich on Jun 11, 2021 18:36:35 GMT
"Lytic" is short for electrolytic. Ron Rich
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