Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Switchboard Indicator Lamps

I need some to restore some old telco equipment. The bulbs are a slide base,
24V 2W incandescent, similar to these:

https://www.grainger.com/product/LUM...r-24PSB-21U505

but longer. The above lamps are 1-7/64" long (28mm). The lamps I need to
replace measure 43mm.

These things are OLD. The above Grainger bulb has a plastic wedge-shaped
base. The base of the lamps in this old equipment are wood.

Any ideas on sources or even the proper size/type name?
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Default Switchboard Indicator Lamps

On 16/06/2018 01:12, Paul Hovnanian P.E. wrote:
I need some to restore some old telco equipment. The bulbs are a slide base,
24V 2W incandescent, similar to these:

https://www.grainger.com/product/LUM...r-24PSB-21U505

but longer. The above lamps are 1-7/64" long (28mm). The lamps I need to
replace measure 43mm.

These things are OLD. The above Grainger bulb has a plastic wedge-shaped
base. The base of the lamps in this old equipment are wood.

Any ideas on sources or even the proper size/type name?


I'm in the process of bulk disposal of my old shop stock, as you can see
from the last update date
http://www.diverse.ip3.co.uk/compfull.htm
in the UK though, as in the pic you refereed to.
IIRC they came from an aircraft repair facility , so maybe used in
cockpits also
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Default Switchboard Indicator Lamps

On 16.06.2018 02:12, Paul Hovnanian P.E. wrote:

I need some to restore some old telco equipment. The bulbs are a slide base,
24V 2W incandescent, similar to these:

https://www.grainger.com/product/LUM...r-24PSB-21U505

but longer. The above lamps are 1-7/64" long (28mm). The lamps I need to
replace measure 43mm.

These things are OLD. The above Grainger bulb has a plastic wedge-shaped
base. The base of the lamps in this old equipment are wood.

Any ideas on sources or even the proper size/type name?


Look for "Slide Base T6.8". For example SM2420G (24V 0.5W) are in stock
at Mouser.
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Default Switchboard Indicator Lamps

On 2018/06/15 5:12 PM, Paul Hovnanian P.E. wrote:
I need some to restore some old telco equipment. The bulbs are a slide base,
24V 2W incandescent, similar to these:

https://www.grainger.com/product/LUM...r-24PSB-21U505

but longer. The above lamps are 1-7/64" long (28mm). The lamps I need to
replace measure 43mm.

These things are OLD. The above Grainger bulb has a plastic wedge-shaped
base. The base of the lamps in this old equipment are wood.

Any ideas on sources or even the proper size/type name?


T-2 bulbs measure 1-11/16" in total length. You are looking for 24C1
Telephone and Indicator bulbs according to my old light bulb spec guide.
They are rated as 0.06 - 085A, 1900 Footcandles, average cold resistance
33R, hours life = 5000.

I might have those in my ancient parts stock if you can't find them
elsewhere.

At least you know what you are looking for now!

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
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Default Switchboard Indicator Lamps

On 2018/06/16 11:57 AM, John Robertson wrote:
On 2018/06/15 5:12 PM, Paul Hovnanian P.E. wrote:
I need some to restore some old telco equipment. The bulbs are a slide
base,
24V 2W incandescent, similar to these:

https://www.grainger.com/product/LUM...r-24PSB-21U505

but longer. The above lamps are 1-7/64" long (28mm). The lamps I need to
replace measure 43mm.

These things are OLD. The above Grainger bulb has a plastic wedge-shaped
base. The base of the lamps in this old equipment are wood.

Any ideas on sources or even the proper size/type name?


T-2 bulbs measure 1-11/16" in total length. You are looking for 24C1
Telephone and Indicator bulbs according to my old light bulb spec guide.
They are rated as 0.06 - 085A, 1900 Footcandles, average cold resistance
33R, hours life = 5000.

I might have those in my ancient parts stock if you can't find them
elsewhere.

At least you know what you are looking for now!

John :-#)#


And here are some!

https://www.topbulb.com/light-bulbs/...lbs/slide-base

John :-#)#

--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."


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Default Switchboard Indicator Lamps

On 16-6-2018 2:12, Paul Hovnanian P.E. wrote:
I need some to restore some old telco equipment. The bulbs are a slide base,
24V 2W incandescent, similar to these:

https://www.grainger.com/product/LUM...r-24PSB-21U505

but longer. The above lamps are 1-7/64" long (28mm). The lamps I need to
replace measure 43mm.

These things are OLD. The above Grainger bulb has a plastic wedge-shaped
base. The base of the lamps in this old equipment are wood.

Any ideas on sources or even the proper size/type name?

Last time I had one of these fail, I soldered a led in
the metal part.
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