First of all, We'd like to wish everybody who drops by here a very Happy Thanksgiving. This is our 15th Thanksgiving together, so I have 15 more things to be thankful for!
The work is proceeding quickly on the Fisher receiver now that I have sufficient time to devote to it. So far I've replaced 17 electrolytic capacitors that were under-rated. You simply don't run 24 Volts on a capacitor rated at 25 Volts. You have zero safety margin if the Line Voltage rises a few Volts, and I've seen a low of 116 Volts, and a high of 121 Volts, here at the house. Most of those were on the Power Supply Board, six were in the Tone Amplifier Board and two were on the Equalization Board.
I soldered all of the wire wrap connections to their pins on the boards, and cleaned up some iffy areas regarding how the wiring is run inside the chassis.
A veritable forest of new lamps!
Say "Ahhhhhhhh...."
All the electrolytic capacitors removed.
And replaced with new, higher Voltage, and a higher temperature rating.
I did the same to the Tone Amplifier Board and the Equalization Board.
If I'm able to move when we get back from Dinner on Thanksgiving, I'll dress all the leads into their spaces, and replace the mini cable ties Fisher used.
And this completes the bottom side of the chassis
Drive safe be careful of any bad weather, and enjoy Thanksgiving. I have a LOT to be thankful for this year.
Have a great Thanksgiving!
ReplyDeleteThanks, Bob, we did!
DeleteDry roads to Cheyenne today!
ReplyDeleteAnd very light traffic!
DeleteHappy Turkey Day! And looking good!
ReplyDeleteBack at 'ya, NFO! Glad to be finished with the easy stuff on the bottom.
Delete