The miniature lamps in my 1999 GM Car Radio have burned out. What bulb would
adequately replace these bulbs? Also it looks like two of the ten bulbs are
different with maybe a higher intensity.

Thanks, Don and Liz



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They have radios that still use lamps and not LEDs???


"LOP" wrote in message
...
The miniature lamps in my 1999 GM Car Radio have burned out. What bulb
would adequately replace these bulbs? Also it looks like two of the ten
bulbs are different with maybe a higher intensity.

Thanks, Don and Liz


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News==----
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Newsgroups
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Michael Kennedy wrote:
They have radios that still use lamps and not LEDs???

Yes,
I had to replace the lamps on my 2000 Pontica Montana radio last year.
These must be made specifically for GM, because after lots of searching
I never did find exact replacements. I have no idea if the 1999 radio
uses ths same lamps, but I ended up removing the remaining good lamp
and measuring the current draw at 12-14v. I bought a few lamps approx
the same physical size and current draw, and selected the one that best
matched the brightness of the original when powered-up. I will see if
I can find the part number for the lamp that I ended up using. IIRC it
was a fairly efficient bulb... lots of candlepowers per watt. Don't
use a higher current bulb to get the brightness where you want it, you
could blow the driver transistors.

On Dec 6, 4:46 pm, "LOP" wrote:
The miniature lamps in my 1999 GM Car Radio have burned out. What bulb would
adequately replace these bulbs?

I replace these all the time in GM radios. There are two different
size bulbs used, depending on the radio model and faceplate. The
larger one is a T-1 type bulb. I use part #141073 from Jameco
Electronics as a replacement. The are the same size and so close to
the same MSCP that you can't really tell. For the micro lamps I find
that Radio Shack #272-1092 works pretty good. Not quite as bright, but
the difference is small. The current draw of both lamps is well within
the capabilities of the lamp driver circuit.


D

"D_Zoot" wrote in
ps.com:



On Dec 6, 4:46 pm, "LOP" wrote:
The miniature lamps in my 1999 GM Car Radio have burned out. What
bulb would adequately replace these bulbs?

I replace these all the time in GM radios. There are two different
size bulbs used, depending on the radio model and faceplate. The
larger one is a T-1 type bulb. I use part #141073 from Jameco
Electronics as a replacement. The are the same size and so close to
the same MSCP that you can't really tell. For the micro lamps I find
that Radio Shack #272-1092 works pretty good. Not quite as bright, but
the difference is small. The current draw of both lamps is well
within the capabilities of the lamp driver circuit.


D



Can you help me with my radio? I have a 1999 Monte Carlo Z34 with about 3
blown bulbs. How do you change these bulbs and/or remove the radio?

I'll assume there is no easy way to accomplish this, but since you work on
these all the time, maybe you can help.

Peter wrote:
Can you help me with my radio? I have a 1999 Monte Carlo Z34 with about 3
blown bulbs. How do you change these bulbs and/or remove the radio?

I'll assume there is no easy way to accomplish this, but since you work on
these all the time, maybe you can help.


Peter,

The bulbs are soldered to the board, if you are equipped to deal with
soldering on a smallish scale read on:

I don't work at a Chevy garage, so this removal procedure may be a
little vague, but in a nutshell you have to pull the bezel/trim panel
off that goes around the instrument cluster, radio and heater controls.
Usually these panels are just held in place by spring clips and the
panel should pull straight off. On some applications the bottom of
the panel tucks in under the panel below the steering column. Once
you get the panel off, there will be two or three screws holding the
radio in, after removing the screws the radio pulls straight out.

Remove any round knobs from the front of the radio by pulling straight
off. Pop the top and bottom covers off the radio. find two or three
groups of wires (depending on radio model) coming out from the
faceplate area and plugging into the boards inside the radio, unplug
these wires at the connectors on the boards. Carefully release the
tabs around the perimeter of the faceplate and pull the faceplate
straight off. Looking at the backside of the faceplate you should see
a number of screws holding the display and button circuit board to the
backside of the faceplate. Remove these screws while holding the board
in place. Put the faceplate face down (this is so all the buttons and
light tubes don't fall out of it) and remove the circuit board.

Now you should be looking at all the lamps! If you have more than a
couple blown, you might want to replace them all while you are there.

Good luck!
D

"D_Zoot" wrote in
ups.com:


Peter wrote:
Can you help me with my radio? I have a 1999 Monte Carlo Z34 with
about 3 blown bulbs. How do you change these bulbs and/or remove the
radio?

I'll assume there is no easy way to accomplish this, but since you
work on these all the time, maybe you can help.


Peter,

The bulbs are soldered to the board, if you are equipped to deal with
soldering on a smallish scale read on:

I don't work at a Chevy garage, so this removal procedure may be a
little vague, but in a nutshell you have to pull the bezel/trim panel
off that goes around the instrument cluster, radio and heater
controls.
Usually these panels are just held in place by spring clips and the
panel should pull straight off. On some applications the bottom of
the panel tucks in under the panel below the steering column. Once
you get the panel off, there will be two or three screws holding the
radio in, after removing the screws the radio pulls straight out.

Remove any round knobs from the front of the radio by pulling straight
off. Pop the top and bottom covers off the radio. find two or three
groups of wires (depending on radio model) coming out from the
faceplate area and plugging into the boards inside the radio, unplug
these wires at the connectors on the boards. Carefully release the
tabs around the perimeter of the faceplate and pull the faceplate
straight off. Looking at the backside of the faceplate you should see
a number of screws holding the display and button circuit board to the
backside of the faceplate. Remove these screws while holding the
board in place. Put the faceplate face down (this is so all the
buttons and light tubes don't fall out of it) and remove the circuit
board.

Now you should be looking at all the lamps! If you have more than a
couple blown, you might want to replace them all while you are there.

Good luck!
D


Thanks! I have the stuff to solder tiny components, so I should be all
set. If I get the time, I'll try this procedure.

Will the bulb numbers be on the bulbs so I know what to replace them
with? I deleted the previous message(s) with the bulb numbers and where
to order them because I wasn't sure if they applied to my brand or not.

Also, they are incendecent, correct? Another words - no polarity.

It's a silly question, but figured I'd ask it just in case.

Thanks again!

Peter wrote:
Will the bulb numbers be on the bulbs so I know what to replace them
with? I deleted the previous message(s) with the bulb numbers and where
to order them because I wasn't sure if they applied to my brand or not.

Also, they are incendecent, correct? Another words - no polarity.


No part numbers on the lamps (even if you find a number, it would
probably be a house number), yup, they are regular incandecent, put
them in either direction.

For the larger lamps, T-1 style, I use part #141073 from Jameco
Electronics as a replacement. The are the same size and so close to
the same MSCP that you can't really tell. For the micro lamps I find
that Radio Shack #272-1092 works pretty good. Not quite as bright, but
the difference is small. The current draw of both lamps is well within

the capabilities of the lamp driver circuit.


D