UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Offered and Wanted Messages > Repair and Restoration Services Wanted

Notices

Repair and Restoration Services Wanted If you need someone to repair or restore equipment for you please post your request here.

Reply
 
Thread Tools
Old 27th Nov 2021, 5:51 pm   #1
nightowl
Triode
 
Join Date: Dec 2019
Location: Lanarkshire, Scotland, UK.
Posts: 46
Default Valve testing in Scotland.

anyone in the southern half of scotland be able to help out with x4 small boxes of valves I've inherited, to see which are knackered and which aren't?

t.i.a
m
nightowl is offline   Reply With Quote
Old 28th Nov 2021, 9:20 am   #2
robinshack
Octode
 
robinshack's Avatar
 
Join Date: Jun 2010
Location: Spalding, Peterborough, Cambridgeshire, UK.
Posts: 1,893
Default Re: valve testing in scotland

May be an idea to list the type numbers here as what look new and what look used. Get an idea as to which ones are even worth the time testing. Unless you already know which types are likely to be worth keeping or selling?
Rob
__________________
I am also interested in and collect 00 model railway. My avatar is Bruiser, he has cauliflower ears!
robinshack is offline   Reply With Quote
Old 14th Dec 2021, 7:07 pm   #3
nightowl
Triode
 
Join Date: Dec 2019
Location: Lanarkshire, Scotland, UK.
Posts: 46
Default Re: Valve testing in Scotland.

right then.....

smallest box has the following (not in individual boxes):-
Mullard
EY86 x1
ECL80x1
EB91x1
EY51x2
WD
CV/128x1
6F33x1
6AL5x3
12AT7x3
brimar
UABC80x1
UF89x1
GEC
U47x1
mazda
PCF80x2
Mullard
PCF80x4
PCC89x1
ECC82x1
PCC84x1
UCC85x1
PCL83x1
UCH81x1
EF/P80 x2
UY85x1
Marconi
PCL84x1
Mullard
EF80x4
PY81x2
PL81x1
PL83x1
Tungsram 21A6x1

2nd box (some boxed some loose) :-
10F1x22
20L1x3
20F2x1
20D1x8
EF80x13
EF183x1
EF91x2
EY86/87x1
EEF83x1
EF98x1
EB91x7
DL92x3
DL96x1
DF96x2
DAF96x3
DAF91x2
DK91x2
DK96x1
CV/138x2
IT4x2
X78x1
6AM6x1
ECL82x2
6L18x1
UL41x1
ULF30x1
6F13x5
6F14x2
6F15x1
6LD20x1
6BW6x1
PY83x1
PY82x1
PY81x2
PC97x1
PCF82x1
PL81x1
PCF86x1
R19x2
PCC84x2
PCF80x3
PCL84x2
PCL85x1
PL83x1
UCH42x2
UY41x2
UL46x1
UAF42x1
TH4Bx1
CKR605x1
CKR6B4 g x2
PY33x1
U801x3
6CD6 g x1
EBC33x1
CCH35x1
6KB/8x1
6J5 GT/Gx1
X148x1
DL82x1
10P14x2
OM4x1
OM6x1
DW4/350x1
TDD4x1
CL33x1

box 3:-
boxed=
Airministry VR65 x4
Marconi
DH42x1
Pee Exe Four x1
USN RCA7193 x4
Mazda 20P1 x1
Mullard
PENB4x1
38x1
UAF42x2
UCL82x1
PL83x1
EP80x2
EB91x6
UCH81x1
UY85x1
B9Gx1
B4E2x1
UBF89x1
PCL801/30PL1x1
EAP42x2
EBC33x1
ECC35x2
G234x1
ECH35x1
ECH21x1
ECH42x1
1K3x1
EL91x2
PL84x1
Phillips
GM81x1
EF86x1
85??x1
ECL86x2
MU14x1
PZ30x1
some USSR valvesx2
Mazda 10PMx1
6K8G/cv1944x1
CRC 6SG7V-211 H3E x1
national union 6S1L x1
R4/ 6ACY
BA95W x2
JRC 6J6 x1
2F4x1
6AL5 x1
Brimar B3A2 x1
A4 x1
E?40 x1
ECC8x1

here endeth the list.
nightowl is offline   Reply With Quote
Old 15th Dec 2021, 9:12 am   #4
Ed_Dinning
Dekatron
 
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 7,402
Default Re: Valve testing in Scotland.

Hi M, quite a selection there, a good few of which are TV types (P numbers), as A first test you could go through them and sort out any that have o/c heaters.
It will take quite a time to test all of them even if a Mullard HSVT is used and most are quite low value.
A quick search on the web will reveal the valuable ones, but note that the very high values are often only obtained for very specific types of a given valve and usually if it has the data with it from the likes of an AVO tester where the test proceedure is much longer and more involved

Ed
Ed_Dinning is offline   Reply With Quote
Old 15th Dec 2021, 2:23 pm   #5
nightowl
Triode
 
Join Date: Dec 2019
Location: Lanarkshire, Scotland, UK.
Posts: 46
Default Re: Valve testing in Scotland.

ah I was wondering if any were tv ones! (the grandfather inlaw was into making them back in the day).
nightowl is offline   Reply With Quote
Old 15th Dec 2021, 2:56 pm   #6
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 23,816
Default Re: Valve testing in Scotland.

You should bear in mind that few of the valves on your list are worth a great deal, so if you pay to have them tested you may end up spending more than the good ones are worth.
paulsherwin is offline   Reply With Quote
Old 3rd May 2022, 1:56 pm   #7
nightowl
Triode
 
Join Date: Dec 2019
Location: Lanarkshire, Scotland, UK.
Posts: 46
Default Re: Valve testing in Scotland.

more valves from clearing the GD in laws garage....

Phillips PZ30
'' 6C5G
Mullard TH4B
'' VP4B
'' TDD4
'' EN34
'' UM34
Triatron (?) DT436
AM VR188
Mazda AC2/PEN/DD
'' AC4/PEN
Osram U5O
'' KT66
Brimar 6F6G
'' A563
'' N143
Mullard ECH83/6DS8
? W143
? W14
General elec 6SG7
Westinghouse 6AK7/6AG7
AM VR5A

would any of the above apart from the AM and GE/Westinghouse have been used in military equipment?
any of them fairly scarce?
nightowl is offline   Reply With Quote
Old 3rd May 2022, 3:39 pm   #8
Heatercathodeshort
Dekatron
 
Heatercathodeshort's Avatar
 
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 8,745
Default Re: Valve testing in Scotland.

The EM34 [N ?] and UM34 less so, are rare in good condition emission wise and fetch silly money. Likewise the KT66. The AC4/PEN is also a nice valve to have if you are a collector of Murphy radios. The rest are generally run of the mill. John.
Heatercathodeshort is offline   Reply With Quote
Old 3rd May 2022, 8:09 pm   #9
murphyv310
Dekatron
 
murphyv310's Avatar
 
Join Date: Sep 2006
Location: Kilmarnock, Ayrshire, UK.
Posts: 4,952
Default Re: Valve testing in Scotland.

Hi.
I agree with John. If the KT66 is NOS then it will fetch good money, A matched pair would be worth more than double the single valve. Any used valve will fetch considerably less and without a box even less.
The issue is testing which takes time, a couple of hundred valves will take around 16 hours or longer, each valve needs adequate warming time, the tester needs to be set for the valves configuration and readings taken (not necessarily in this order).
Visual checks can be done on "pulls" in the first instance as some exhibit staining or down to air etc, valves with no numbers can often be identified by those that have decades of valve experience (like myself) so can be marked and then tested. All this takes time. I have bought valves off Ebay in the past and have thrown out 50% which were either down to air or worn out pulls. Conversely good valves but the testing time and condition reflected in the price.
__________________
Cheers,
Trevor.
2M0GZQ. RSGB, GQRP, WACRAL, K&LARC. Member
murphyv310 is offline   Reply With Quote
Old 4th May 2022, 11:55 pm   #10
nightowl
Triode
 
Join Date: Dec 2019
Location: Lanarkshire, Scotland, UK.
Posts: 46
Default Re: Valve testing in Scotland.

tar for the gen John n Trevor, the newest list of valves are all non boxed (were in a drawr in the garage) so most likely pulls, some look in fairly good nick, some have been in the wars mind ;-)
nightowl is offline   Reply With Quote
Old 5th May 2022, 9:08 am   #11
Craig Sawyers
Dekatron
 
Craig Sawyers's Avatar
 
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 3,878
Default Re: Valve testing in Scotland.

There are some equivalents in there. EF91 is the same as 6AM6 (RF pentode). And EB91 is the same as 6AL5 (dual signal diode).

Those, and the 6F33 pentode might be of interest for anyone restoring a Racal RA17 receiver.

Craig
__________________
Doomed for a certain term to walk the night
Craig Sawyers is offline   Reply With Quote
Old 5th May 2022, 9:24 pm   #12
murphyv310
Dekatron
 
murphyv310's Avatar
 
Join Date: Sep 2006
Location: Kilmarnock, Ayrshire, UK.
Posts: 4,952
Default Re: Valve testing in Scotland.

Quote:
Originally Posted by nightowl View Post
tar for the gen John n Trevor, the newest list of valves are all non boxed (were in a drawr in the garage) so most likely pulls, some look in fairly good nick, some have been in the wars mind ;-)
Being them on the 28th, will do my best to look and check them on the day. There will be others here on the day that can lend a hand as well.
__________________
Cheers,
Trevor.
2M0GZQ. RSGB, GQRP, WACRAL, K&LARC. Member
murphyv310 is offline   Reply With Quote
Old 8th May 2022, 8:01 pm   #13
nightowl
Triode
 
Join Date: Dec 2019
Location: Lanarkshire, Scotland, UK.
Posts: 46
Default Re: Valve testing in Scotland.

will do....
nightowl is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 1:45 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Copyright ©2002 - 2021, Paul Stenning.