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

squinancy · 7th May 2019, 4:19 pm

And Simon was right!

I did not shake up the set. Just carefully turned it upside down at full volume when the rattle was loudest on a sharp medium wave station. ---->>>
Lo and behold, the whole noise racket stopped right when the set was totally flipped around. (No change at 90 degrees turn.) The speech sound came across so clear that I hadn't known this set to be able produce.

My guess is that they are flakey rust particles sitting on the cone because at one point I removed rust from the metal chassis.
This is a great relief because the problem is only cosmetic at the end of the day. The set is electrically sound. I will try to remove the particles, but not as a matter of urgency.

And..
yeah, I stacked up on high voltage caps when I was told that their time was up. Ordered them from the States about 15 years ago. I have a few 1-2000v ones that are still healthy. Can't do any harm I guess.

Thanks for all the good advice.

P.s.:
If anyone's interested, the fender coupling transformer (4Ω-14.5kΩ) capable of replacing the o/p transformer in the CN429 available from WES Components (recommended in an another thread)
https://www.wes.com.au/ConfirmMessag...no-back-button

Order Code NSC922921
See catalogue: https://www.wes.com.au/mediapub/eboo...p/1383/#zoom=z

costs $30 AUD + shipping but individual (non-corporate) buyers can only order from this site:
https://www.wagneronline.com.au/Login.aspx

7th May 2019, 4:19 pm	#8
squinancy Retired Dormant Member Join Date: Aug 2007 Location: New Malden, London, UK. Posts: 70	Re: Vidor CN429 Lady Margaret rattling sound And Simon was right! I did not shake up the set. Just carefully turned it upside down at full volume when the rattle was loudest on a sharp medium wave station. ---->>> Lo and behold, the whole noise racket stopped right when the set was totally flipped around. (No change at 90 degrees turn.) The speech sound came across so clear that I hadn't known this set to be able produce. My guess is that they are flakey rust particles sitting on the cone because at one point I removed rust from the metal chassis. This is a great relief because the problem is only cosmetic at the end of the day. The set is electrically sound. I will try to remove the particles, but not as a matter of urgency. And.. yeah, I stacked up on high voltage caps when I was told that their time was up. Ordered them from the States about 15 years ago. I have a few 1-2000v ones that are still healthy. Can't do any harm I guess. Thanks for all the good advice. P.s.: If anyone's interested, the fender coupling transformer (4Ω-14.5kΩ) capable of replacing the o/p transformer in the CN429 available from WES Components (recommended in an another thread) https://www.wes.com.au/ConfirmMessag...no-back-button Order Code NSC922921 See catalogue: https://www.wes.com.au/mediapub/eboo...p/1383/#zoom=z costs $30 AUD + shipping but individual (non-corporate) buyers can only order from this site: https://www.wagneronline.com.au/Login.aspx