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 Post subject: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 12:35 am 
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Location: Stephenson County IL. 61032
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Does anyone know if it is still available anywhere? I can't find any like it.

This bulb is from my 1990 Jeep Grand Wagoneer's original stereo. It needed some work on the amplifier, and since at least half the bulbs are bad I figured I would replace them. (especially since I now know for sure that I fixed the amp, and that it now sounds GREAT!)

I have found replacement's for the grain of wheat style bulbs in the button panels, but now I need a couple of these tubular lamps for the dial light. The dial has always been dim, the reason was obvious after taking it all apart. 2 of the 3 are burned out.


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 12:43 am 
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Searching around on the net turned up very few of this type. I'm sure someone here will come through with a part number, but you could probably use one of your grain of wheat bulbs, or several, or even an LED type replacement. You'd just need to know the voltage, and approximate wattage. Myself, I'd opt for an LED so you don't have to do it again :)

I used a lot of those types in equipment repair back in the day, but there's no chance I either remember the specs, or have any left. SONY used them in their 3/4" VCR carriages. Probably dating myself with that comment.........

happy hunting

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 1:06 am 
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Axial lamp, not too common these days, but.....

https://kpcomponents.co/collections/lam ... -20mm-l-25

I know nothing about this seller, no affiliation, just what I found..........

EDIT: more popped up:

http://www.dynamtechgroup.com/tape-meterlamps.php

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 1:11 am 
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Compare its size and Voltage requirements with this T3.8 axial lamp, as used in later Yaesu 101 series S-meters.

Lamp T3.8 axial
Image

Just over halfway down this FT-902DM page for more info.
http://foxtango.org/FT901/FT-901-902%20Web%20Page.htm

Greg.


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 1:49 am 
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When you find them, add a dropping res to make the bulbs last longer....WA7OPY


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 1:57 am 
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Try DGWOJO.com

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 3:06 am 
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Goldmine

Attachment:
electronic goldmine  axil lamps.JPG
electronic goldmine axil lamps.JPG [ 25.2 KiB | Viewed 1059 times ]

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Wed 24, 2018 7:05 am 
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Thanks a lot guys. Axial Lamps huh... I had no clue what they were called, so it was hard to look up. Kind of surprised with the prices for some of these! I didn't know about them being used in some of the audio equipment. I've probably seen a few before but never needed to replace any. :roll:


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Thu 25, 2018 5:14 am 
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They are also called meter lamps.
Rick


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Thu 25, 2018 3:57 pm 
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I dropped a 100 watt bulb and to my surprise no filament, It had one of these in it.

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Thu 25, 2018 10:59 pm 
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glue_ru wrote:
I dropped a 100 watt bulb and to my surprise no filament, It had one of these in it.


Sounds like it was a halogen bulb, which have an internal bulb inside the exterior envelope.


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Thu 25, 2018 11:52 pm 
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says incandescent on the box, here's some pics, but at the bottom right, "Halogen"
Odd the box claims both.


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Thu 25, 2018 11:53 pm 
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are these suitable for use in a DBT ?

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Fri 26, 2018 2:50 am 
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Location: North of Mpls, Minnesota
The halogen is Incandescent, it has a filament. I assume by DBT you mean dim bulb tester, yes it can be used for that.

Dave


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Fri 26, 2018 4:32 am 
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Marantz and some other Stereos used Similar bulbs called Fuse Lamps. they looked physically like a fuse and did use a fuse holder, most are being replaced with LEDs. They have warm white and blue and will operate on AC at 8 volts. But there are 12-volt ones available. With skill, you can replace those axial lamps if you have the room.

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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Fri 26, 2018 5:09 am 
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yea, I noticed the fuse style lamps were much easier to find. Unfortunately they would not fit, and would probably short out when everything is put back together.

These axial lamps are mounted right up against the display in the stereo. Then a cover goes around the light's and edge of the display to block off the light to the rest of the face and aim the majority of it into the display. Most likely the fuse style lamps(especially if they are the size of a standard fuse) wouldn't let the cover go back over the edges, and if it were crammed on it would short to ground.


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Fri 26, 2018 5:41 am 
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Location: North of Mpls, Minnesota
I have replaced these bulbs in meters with grain of wheat bulbs.

Dave


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Jan Fri 26, 2018 5:49 am 
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hmm, I probably could do that. Mabey even double them up.

Too bad the ones I picked up are blue... The originals (that were behind the buttons) had the little filters that slipped over the bulb, but none of the new ones that I was finding matched the exact dimensions of mine. Found some that were blue, and that looked like they match the originals with the filters over them, so that's what I went with.

:roll: So, I think I would rather get some new lamps of the original style for the display than go with the blue grain of wheat's.


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 Post subject: Re: What kind of light bulb is this?
PostPosted: Feb Tue 06, 2018 6:05 am 
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I would just like to say thanks again guy's. :)

Finally got it all back together, and am glad to say that I'm finished with this stereo. 8) Had a few issues along the way, but they've been takin care of. The unit works great now, and the amplifier isn't cutting out intermittently anymore either. It's also sounding better than it previously did.

Picture time! :P
Image
I need to clean that display! I can actually read it now in a photograph. Before the new lights(in the display) the camera flash would wash it out and make it unreadable.
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Got the plastic surround trim piece on.
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How it looks with no flash. Nice and bright, easy to see now when it's light outside.

Any classic SUV fans here?

Don't know if anyone's seen my old Jeep, here on ARF.
The 90' Grand Wagoneer!
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paint isn't the best on top, but eh :roll:


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