Help with smoothing capacitor on record player - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Woody1963 · 23rd Oct 2021, 8:24 pm

Quote:

Originally Posted by Station X

Quote:

Originally Posted by Woody1963

Hi Graham think that is what happened when I powered it up originally only one valve glowed, the one that didn’t I think was the one with this loose connection so that aligns with your comment.

So this is a two valve amplifier? I assumed it used a metal rectifier and a single valve. What valves are fitted?

Quote:

Originally Posted by Woody1963

Just one question when I replace the capacitors is it OK to use circuit board or are the voltages too high?

Thanks Dave

Sorry, but I don't understand that question.

Hi there are two valves but the smaller one has no number it’s a Mullard

Woody1963 · 23rd Oct 2021, 8:31 pm

This is a picture of the two valves, I have removed the triple can and wax capacitor ready for connecting the replacement caps when they come

Station X · 23rd Oct 2021, 8:35 pm

Any chance of a picture showing the underside of the chassis? The second valve is probably a UY85 rectifier.

This could be a Portadyne RP10, RP11, RP12 or RP15 all of which use a UY85 and UL84,

Woody1963 · 26th Oct 2021, 7:51 pm

Hi All

Well the three individual caps are in place of the original triple can and I have replaced the old wax capacitor with a polyester one. Just got to fit it and turn it on.

Wish me luck!!!

Herald1360 · 27th Oct 2021, 10:52 am

Could be worth dressing the nearer cap further away from the adjacent valve for its thermal happiness.....?

Woody1963 · 27th Oct 2021, 1:14 pm

Yes thank you not the neatest job but plugged it in and no more hum just perfect clear audio, just got to sort the clanking noise from the platter lol

23rd Oct 2021, 8:31 pm	#22
Woody1963 Triode Join Date: Sep 2020 Location: Telford, Shropshire, UK. Posts: 42	Re: Help with smoothing capacitor on record player This is a picture of the two valves, I have removed the triple can and wax capacitor ready for connecting the replacement caps when they come Attached Thumbnails

23rd Oct 2021, 8:35 pm	#23
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Help with smoothing capacitor on record player Any chance of a picture showing the underside of the chassis? The second valve is probably a UY85 rectifier. This could be a Portadyne RP10, RP11, RP12 or RP15 all of which use a UY85 and UL84, __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

26th Oct 2021, 7:51 pm	#24
Woody1963 Triode Join Date: Sep 2020 Location: Telford, Shropshire, UK. Posts: 42	Re: Help with smoothing capacitor on record player Hi All Well the three individual caps are in place of the original triple can and I have replaced the old wax capacitor with a polyester one. Just got to fit it and turn it on. Wish me luck!!! Attached Thumbnails

27th Oct 2021, 10:52 am	#25
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Help with smoothing capacitor on record player Could be worth dressing the nearer cap further away from the adjacent valve for its thermal happiness.....? __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

27th Oct 2021, 1:14 pm	#26
Woody1963 Triode Join Date: Sep 2020 Location: Telford, Shropshire, UK. Posts: 42	Re: Help with smoothing capacitor on record player Yes thank you not the neatest job but plugged it in and no more hum just perfect clear audio, just got to sort the clanking noise from the platter lol