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K250-1 lamps? [message #15216]

Sat, 05 February 2011 09:26

jason beers
Messages: 2
Registered: February 2011

Junior Member

I'm really not feeling up to taking my amp apart - I know there is a schematic printed inside, but does anyone off hand know what the replacement bulb part would be. I've never seen this thing lit up!

By the way, I LOVE this amp.

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Re: K250-1 lamps? [message #15217 is a reply to message #15216]

Sat, 05 February 2011 10:56

pleat
Messages: 1452
Registered: June 2004
Location: Belding, Mi

Senior Member

GE335 is the bulb number. As fragile as the switches are, I would suggest tearing the amp apart to do the replacement.
pleat

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Re: K250-1 lamps? [message #15219 is a reply to message #15216]

Sat, 05 February 2011 12:29

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

two other ways to get it out would be to stuff a section of auto or fish tank vacume hose over the bulb, or super glue a broken off section of a pen or small siliver of wood to the head of the bulb.
These bulbs just unscrew out and in, and if you apply too much push in pressure on these 40 year old plastic switch bodys they can break off.
Go easy!

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Re: K250-1 lamps? [message #15220 is a reply to message #15219]

Sat, 05 February 2011 16:01

BC
Messages: 583
Registered: March 2000
Location: Kentucky

Senior Member

How do I change the bulb in a Challenger? It is a lens only as the power switch is a toggle in the back. I am certain it is obvious to everyone but me as to how to get the lens off! BC Cool

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Re: K250-1 lamps? [message #15222 is a reply to message #15216]

Sat, 05 February 2011 16:16

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

I am not 100 % sure, as I have never worked on that/those models.
They do seem to use the same square lens as the K150 and k250/350/600 metal face amps, so if the lens is sticking out from where it is incerted into the metal control panel you would just pry it with two small screw drivers like with the amps I listed.

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Re: K250-1 lamps? [message #15224 is a reply to message #15222]

Sun, 06 February 2011 10:47

kustomoholic
Messages: 227
Registered: March 2009
Location: Tulsa,oklahoma

Senior Member

The pilot fixture for the Challenger is different from the switches... Remove amp chassis from case ...remove top plate of chassis ...Pilot is inside and should be easily apparrent on bulb replacement. If is same as my Charger then there are 2 screws holding fixture.. remove screws and fixture..... exchange with a new bulb and reinstall fixture and you should be good to go without risking damage to those virtually irreplaceable lenses.

Craig

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Re: K250-1 lamps? [message #15226 is a reply to message #15224]

Sun, 06 February 2011 16:58

BC
Messages: 583
Registered: March 2000
Location: Kentucky

Senior Member

Solved it. On the Challenger you can take the two screws out of the head so it will slide forward. Slip a screwdriver behind the lens and it easily pops out. Thanks for the responses! Cool

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Re: K250-1 lamps? [message #15252 is a reply to message #15216]

Sat, 12 February 2011 12:09

jason beers
Messages: 2
Registered: February 2011

Junior Member

Thanks for the info!!!

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Re: K250-1 lamps? [message #15258 is a reply to message #15252]

Mon, 14 February 2011 21:47

ramrod250
Messages: 32
Registered: January 2011
Location: Germantown, Wisconsin

Member

I got some 335s via Mouser, and struggled with removing the lamp. Got the push-button/lens out with a flat-blade screwdriver, but things are still pretty tight in there. Super-glued a stick to the bulb, but no luck.

Finally, success! I was able to slip a piece of small heat-shrink tubing over the end of the bulb, far enough that I could get it to turn and come out. Same thing with the new bulb, going back in. There's just enough adhesion to get a grip, and the tubing pulls off easily. I didn't try/need to shrink the tubing in place.

Now I have a nice, blue Power light where there wasn't one before. Very Happy

Jim Haught
Creedence + Kustom: a great combination.

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Re: K250-1 lamps? [message #15259 is a reply to message #15258]

Tue, 15 February 2011 16:01

chicagobill
Messages: 2005
Registered: April 2003

Senior Member

I use a short piece of rubber surgical tubing on the end of a wooden dowel. This is the type of tubing that Fender used for Strat pickup mounting springs in the fifties.

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