46-1226 run 122 with squeal

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46-1226 run 122 with squeal

Jim Dutridge
Senior Member

Posts: 291
Threads: 54
Joined: Mar 2007
City: Toledo State, Province, Country: OH

12-21-2010, 09:22 AM

Thanks for the reply Ron. Yes, the 4.7 is new and connected to the bottom side of the control to ground. So, my volume control is OK then. One thing I did find is that the 33K resistor #54 in the Sams print, was connected as shown in the Riders for the run 121 chassis, at the tap. The Sams shows it connected to the bottom side of the control.

I removed the tap connection for the resistor and placed it on the bottom of the control but it still squeals. If I keep the current draw below 460ma I can get normal audio from the radio, albeit very low, which one would expect.

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Messages In This Thread

46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 08:11 AM

Re: 46-1226 run 122 with squeal - by Ron Ramirez - 12-21-2010, 08:37 AM

Re: 46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 09:22 AM

Re: 46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 12:52 PM

Re: 46-1226 run 122 with squeal - by Ron Ramirez - 12-26-2010, 08:22 AM

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