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| | |-+  Light on my OTS doesn't come on. Possible causes/fixes?		 « previous next »
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Author Topic: Light on my OTS doesn't come on. Possible causes/fixes?  (Read 11080 times)
bigwebb83
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« on: September 26, 2011, 02:31:37 PM »
Let me start off by saying that I'm not all that comfortable with poking around inside an amp but I can do some basic stuff.  Anyway, the OTS works perfectly but the power indicator light doesn't come on.  Anyone know if there is something simple I should check first on this?  Not a huge deal but would like to have it fixed.
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Thilo278
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« Reply #1 on: September 26, 2011, 02:54:20 PM »
Just replace it with an equal lightbulb (i think you can get it at nearly every electronic store).
You just need to a little bit.
Some here also got an LED for that I think...
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T Wilcox
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« Reply #2 on: September 26, 2011, 03:29:49 PM »
The neon light that is in your OTS, does not have interchangeable light bulbs/ leds!
You would need to desolder and replace with a whole replacement lamp assembly.
I believe Nik is recommending installing a resistor in series with the lamp to make it last longer.
If you are not comfortable with desoldering and rewiring you should probably bring it to a tech.
I have seen mention of the replacement light being available at mouser, but I do not know what the part # is yet. You could use any light that runs on 6.3v but you would want it to fit in the same size mounting hole.

My light went out on my HRM as well, I will be replacing it eventually but am in no hurry.

Todd
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T Wilcox
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« Reply #3 on: September 26, 2011, 05:37:51 PM »
I am almost positive this is the lamp to replace with.

http://www.mouser.com/ProductDetail/Shin-Chin/R9-63L-RED-6V/?qs=sGAEpiMZZMtEjy7lsqBi5VSxz%2fhgbEJYtFHrvdeCx%252b4%3d

Nik suggested to put a 47ohm resistor to one leg to run lamp cooler for longer life.

Todd
« Last Edit: September 26, 2011, 08:34:45 PM by T Wilcox » Logged
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citizen
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« Reply #4 on: September 26, 2011, 08:11:22 PM »
Sorry for a daft question but what wattage should the resistor be? Nik sent me a spare lamp for my amp but I haven't had a chance to put it in yet..
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T Wilcox
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« Reply #5 on: September 26, 2011, 08:32:07 PM »
1/2 watt would be fine!
« Last Edit: September 26, 2011, 08:34:09 PM by T Wilcox » Logged
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Thilo278
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« Reply #6 on: September 26, 2011, 08:36:44 PM »
whoops I forgot one important word in my post:
"you just need to [solder] a little bit".
Yes you have to solder. but its quite easy. Had the same problem with mine too, was done in a few minutes.
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bigwebb83
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« Reply #7 on: September 26, 2011, 09:07:07 PM »
anyone have the part number for a blue version?
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T Wilcox
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« Reply #8 on: September 26, 2011, 09:07:14 PM »
Agreed, very easy fix. IMO
Just need a soldering iron

Todd
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T Wilcox
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« Reply #9 on: September 26, 2011, 09:11:38 PM »
No I looked for blue as well.
Was yours blue before it blew?

Todd
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TW Express clone ( build #4 )
Ceriatone HRM MK2 ( build #3 )
Ceriatone 2550  ( Build #2 )
Ceriatone OTS FM50 Modern Eagle Mod (Build #1)
EBMM Steve Morse original
50th anniv American Strat
citizen
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« Reply #10 on: September 26, 2011, 09:58:19 PM »
Blue would be pretty cool for the BM :-/
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poipounder57
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« Reply #11 on: January 22, 2012, 08:52:29 PM »
Quote from: T Wilcox on September 26, 2011, 05:37:51 PM
I am almost positive this is the lamp to replace with.

http://www.mouser.com/ProductDetail/Shin-Chin/R9-63L-RED-6V/?qs=sGAEpiMZZMtEjy7lsqBi5VSxz%2fhgbEJYtFHrvdeCx%252b4%3d

Nik suggested to put a 47ohm resistor to one leg to run lamp cooler for longer life.

Todd

Just was wonder if this was the correct light for the OTS.  This bulb at Mouser.com is rated at 6.0v, OTS calls for a 6.3v?  Thanks!!!
After 3 years my bulb took a dive today:-) 
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citizen
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« Reply #12 on: January 24, 2012, 12:08:17 AM »
I didn't want to take a chance so just ordered a replacement from Nik..
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poipounder57
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« Reply #13 on: January 24, 2012, 09:25:41 PM »
Thanks Citizen!!!  That's what I ended up doing...ordered the parts from Nik.
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citizen
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« Reply #14 on: January 24, 2012, 11:35:57 PM »
No sweat man! -I got my replacement lamp ages ago off Nik and I still haven't got around to putting it in yet Wink - thinking of trying Gregg's HRM bypass mod while I have the chassis out - just haven't had time with family stuff, work and (thankfully) gigs..
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