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#31699 - 12/01/03 06:22 PM Another year, and as if on cue... Happy Holidays  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA


Work Gear for Electricians and the Trades

#31700 - 12/01/03 11:29 PM Re: Another year, and as if on cue... Happy Holidays  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Has anyone tried the Lightkeeper Repair Tool ? My brother just got one and said it worked on 4 out of the 5 sets that he tried it on.
Here is one of their questions and answers about the tool:
Quote
Does the LightKeeper repair bulb Filaments(Lighting Elements)?
No. The LightKeepers Quick Fix Piezo addresses the repair of bulb "shunts" to complete circuits. The LightKeeper but does not bring a bad bulb back to life.

Bad bulbs should be replaced when noticed to prolong the life of the light set. The increased voltage due to burned out bulbs, increases the failure rate of the remaining bulbs.

I always thought that the shunt in the bulb had a higher resistance than that of the filament and that an open filament in a bulb would reduce the voltage to the other bulbs in the set.
Don

[This message has been edited by resqcapt19 (edited 12-01-2003).]


Don(resqcapt19)

#31701 - 12/02/03 07:59 AM Re: Another year, and as if on cue... Happy Holidays  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Thanks for the link, Don. I'm going to Sears today. I'll look one over.


It's hard to believe that another year has gone by.
Happy Holidays to all.


#31702 - 12/02/03 08:41 AM Re: Another year, and as if on cue... Happy Holidays  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Quote
I always thought that the shunt in the bulb had a higher resistance than that of the filament and that an open filament in a bulb would reduce the voltage to the other bulbs in the set.


Don,

I've never seen that in any of the bulbs used on sets in Britain. When the filament burns out, the shunt just bridges the contacts directly (Sometimes! [Linked Image]).

It's quite noticable that the rest of the typical string of 20 lamps are brighter once two or three bulbs have shunted out, and of course the increased voltage can soon result in a chain reaction taking out more bulbs quite quickly.

Sets sold here usually come with one "fuse bulb" (identified by plain glass with just a white-painted tip) intended to open the circuit if too many regular bulbs short out. In practice it quite often takes 5 or 6 to go before the fuse bulb operates.


#31703 - 12/02/03 02:32 PM Re: Another year, and as if on cue... Happy Holidays  
:andy:  Offline
Member
Joined: Oct 2003
Posts: 289
Germany
oh yes, big problems also here in germany. all sets like these run on 24V with transformer. the bridges of cheap sets never work, the bridges of good setz partially work....

does that detector also work on 24VAC?
how much is it?


#31704 - 12/02/03 03:50 PM Re: Another year, and as if on cue... Happy Holidays  
wa2ise  Offline
Member
Joined: Nov 2002
Posts: 784
Oradell NJ USA
Once you get your light sets working, try this scheme: http://home.netcom.com/~wa2ise/radios/xmassp.html Most of the sets will vary in brightness as a few sets' blinkers start blinking. Also, the bulbs will last much longer, but still be plenty bright.



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