Kim,
Just something to consider… I have been under the impression that no more than
three strings should be tied together. Maybe more strings could change the
resistance… just a thought.
Marry Christmas.
73’s
Rich, WD6DOK
> On Dec 4, 2015, at 8:58 AM, Gary J FollettDukes HiFi <dukeshifi@comcast.net>
> wrote:
>
> I tossed all of my incandescent holiday lights years ago, never sorry to see
> them go.
>
> I have not had a single failure in the LED strings.
>
> Gary
>
>> On Dec 4, 2015, at 9:51 AM, James Boswell <jboswell@nrao.edu> wrote:
>>
>> On 12/3/2015 9:18 PM, Kim Elmore wrote:
>>> This is way off topic and not radio related, but there are some danged
>>> smart people that participate on the reflector, so here goes...
>>>
>>> It's the holidays and we've put up Christmas lights (mostly incandescent
>>> series strings) and I'm seeing some very weird affects when I try
>>> replacement bulbs. Specifically, when I plug in a replacement bulb of
>>> ostensibly the correct voltage, it flashes like a strobe and is
>>> immediately burned out. I tried some higher voltage bulbs, up top 12 V
>>> and the same thing happens! All I can think of is that the cold
>>> resistance of the filament is much higher in the replacements than in
>>> all the other bulbs so that far more voltage appears across the new bulb
>>> than the others and so the filament vaporizes. Is this what's going on?
>>> It's very frustrating, to say the least...
>>>
>>> 73 & MX,
>>>
>>> Kim N5OP
>> Kim,
>> Have you tried to replace the bulb, then apply power? Something to
>> consider, the Chinese Christmas lights have no standardization, just because
>> the lamp base matches, the working voltage can be different.
>> It has been my experience, as a rule the cheap Christmas light strings
>> either work or not, and changing the light bulbs have not corrected the
>> problem as the socket is the fault. In the past I have carefully stored a
>> strings of lights and the next year, part or the entire string fails to
>> work. I ohm-out each light bulb, yet the string fails to light.
>> This weekend I will try to set-up my Christmas lights and I hope they
>> work. If I buy new lights, think I will try the LED lights and see if they
>> last better. I hope this helps you out.
>>
>> Take Care, Merry Christmas, 73'S KA5SIW
>>
>>
>>> James B. Boswell JBoswell@NRAO.edu
>>> VLA Engineering Services Office: 575 835-7427
>>> National Radio Astronomy Observatory C.Phone 505 412-3732
>>> Post Office Box 0
>>> 1003 Lopezville Road
>>> Socorro, New Mexico 87801
>>
>>
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