UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

mole42uk · 6th Aug 2018, 7:22 am

Hello Karl,

That capacitor is not bulging, it's a photographic artifact, but I will change all the capacitors now that I know that the power supply and a significant amount of the oscilloscope works. I intend to repair both supplies completely so that I have a spare. I would like to put the 4-channel version of this instrument into use and not have to repair the power supply again!

All of the RIFA capacitors show evidence of cracking and several of the wet electrolytics show signs of running at elevated temperature. See post #1 for pictures. I know about the mains filters - I have a Gould 1602 that exploded the mains filter and the smell remained for several weeks.

6th Aug 2018, 7:22 am	#32
mole42uk Nonode Join Date: Aug 2010 Location: Resolven, Wales; and Bristol, England Posts: 2,608	Re: Gould 4072 bad PSU Hello Karl, That capacitor is not bulging, it's a photographic artifact, but I will change all the capacitors now that I know that the power supply and a significant amount of the oscilloscope works. I intend to repair both supplies completely so that I have a spare. I would like to put the 4-channel version of this instrument into use and not have to repair the power supply again! All of the RIFA capacitors show evidence of cracking and several of the wet electrolytics show signs of running at elevated temperature. See post #1 for pictures. I know about the mains filters - I have a Gould 1602 that exploded the mains filter and the smell remained for several weeks. __________________ Richard Index: recursive loop: see recursive loop Last edited by mole42uk; 6th Aug 2018 at 7:30 am.