Dates inside capacitors. - UK Vintage Radio Repair and Restoration Discussion Forum

linescan87 · 6th Dec 2017, 8:56 pm

Working on a Gec bc4050 at the moment. For no real reason I cut open one of the caps and the date was on the inside.

Might be of interest to someone trying too date a piece of equipment.

Cheers,
John Joe.

alanworland · 6th Dec 2017, 9:40 pm

Crikey! Never seen that before! Did it match up with the outside date?

Alan

Herald1360 · 7th Dec 2017, 12:55 am

What outside date?

Boater Sam · 7th Dec 2017, 1:30 am

Funny place to put a best before date. Never seen that before.
Suppose they were out of date?

Silicon · 7th Dec 2017, 12:03 pm

I can't read that date on the photo. It looks like 'DEC 1970'.

Please let us know the actual text.

linescan87 · 7th Dec 2017, 2:17 pm

Hi,

The date on the inside is 14 JAN 1939. Just the year on the outside.

Yes Boater Sam, these are well past their sell by date!!!

Cheers,

John Joe.

Maarten · 7th Dec 2017, 10:10 pm

Is it the year on the outside or actually the week number followed by the last digit of the year? In this case it could be both, so that isn't conclusive.

6th Dec 2017, 8:56 pm	#1
linescan87 Heptode Join Date: Mar 2014 Location: Meath, Ireland Posts: 551	Dates inside capacitors. Working on a Gec bc4050 at the moment. For no real reason I cut open one of the caps and the date was on the inside. Might be of interest to someone trying too date a piece of equipment. Cheers, John Joe. Attached Thumbnails

6th Dec 2017, 9:40 pm	#2
alanworland Heptode Join Date: Feb 2011 Location: Southend, Essex, UK. Posts: 802	Re: Dates inside capacitors. Crikey! Never seen that before! Did it match up with the outside date? Alan

7th Dec 2017, 12:55 am	#3
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Dates inside capacitors. What outside date? __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

7th Dec 2017, 1:30 am	#4
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: Dates inside capacitors. Funny place to put a best before date. Never seen that before. Suppose they were out of date?

7th Dec 2017, 12:03 pm	#5
Silicon Nonode Join Date: Jun 2007 Location: Coulsdon, London, UK. Posts: 2,163	Re: Dates inside capacitors. I can't read that date on the photo. It looks like 'DEC 1970'. Please let us know the actual text.

7th Dec 2017, 2:17 pm	#6
linescan87 Heptode Join Date: Mar 2014 Location: Meath, Ireland Posts: 551	Re: Dates inside capacitors. Hi, The date on the inside is 14 JAN 1939. Just the year on the outside. Yes Boater Sam, these are well past their sell by date!!! Cheers, John Joe. Attached Thumbnails

7th Dec 2017, 10:10 pm	#7
Maarten Dekatron Join Date: Dec 2007 Location: Haarlem, Netherlands Posts: 4,199	Re: Dates inside capacitors. Is it the year on the outside or actually the week number followed by the last digit of the year? In this case it could be both, so that isn't conclusive.