Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Old January 6th 16, 04:32 PM posted to sci.electronics.repair
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Default Bugs in the machine.

Would a bit of napthalene mothball keep spiders and other small creepy
crawlers out of the warmth of an always-on, so warm, bit of kit, or any
better ideas to keep bugs out of there.
Bose AWRC3G CD radio clock, started non playing of the odd CD then all
CDs failed to play.
Cleaning the lens, no difference, "Disc" in display, the same as with no
disc in there.
The whole unit was so full of fine spider web/cocoon silk? that you
could not see the components of the PA/PS area. Odd bits of insect stuff
around the optical unit. Removed the laser and lens unit from the
sledgeway and air dusted under the lens area. Blew out the PA/PS area
with 1kW blower.
Now playing all CDs thrown at it, cured?
I've twice previously come across bug cocoon/web actually inside the
space under the lens of CD units ,in the laser firing line, as the fault
cause.

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Old January 6th 16, 05:40 PM posted to sci.electronics.repair
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Default Bugs in the machine.

On 01/06/2016 8:32 AM, N_Cook wrote:
Would a bit of napthalene mothball keep spiders and other small creepy
crawlers out of the warmth of an always-on, so warm, bit of kit, or any
better ideas to keep bugs out of there.
Bose AWRC3G CD radio clock, started non playing of the odd CD then all
CDs failed to play.
Cleaning the lens, no difference, "Disc" in display, the same as with no
disc in there.
The whole unit was so full of fine spider web/cocoon silk? that you
could not see the components of the PA/PS area. Odd bits of insect stuff
around the optical unit. Removed the laser and lens unit from the
sledgeway and air dusted under the lens area. Blew out the PA/PS area
with 1kW blower.
Now playing all CDs thrown at it, cured?
I've twice previously come across bug cocoon/web actually inside the
space under the lens of CD units ,in the laser firing line, as the fault
cause.


The vapours from that may condense on the lens...so it probably isn't a
good idea.

I had a similar problem with cockroaches getting into our printers -
make quite a mess! I ended up just putting sticky roach traps all around
the machines until the landlord got the bug problem under control.
Haven't seen a roach in years though.

John :-#)#

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Old January 6th 16, 07:08 PM posted to sci.electronics.repair
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Default Bugs in the machine.

On 2016-01-06, N_Cook wrote:
Would a bit of napthalene mothball keep spiders and other small creepy
crawlers out of the warmth of an always-on, so warm, bit of kit, or any
better ideas to keep bugs out of there.


Napthalene smells like **** and is a poor insecticide. It's used
in closed spaces where the concentration of the vapors builds up.

I'd spray some permethrin-based insecticide in the vicinity,
and maybe even inside the unit.

The stuff is available in the form of bug spray which contains only
around 0.25% of the stuff. It leaves no visible trace and the sprayed
areas stay effective for weeks to months.
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Old January 6th 16, 07:28 PM posted to sci.electronics.repair
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Default Bugs in the machine.

On 06/01/2016 19:08, Kaz Kylheku wrote:
On 2016-01-06, N_Cook wrote:
Would a bit of napthalene mothball keep spiders and other small creepy
crawlers out of the warmth of an always-on, so warm, bit of kit, or any
better ideas to keep bugs out of there.


Napthalene smells like **** and is a poor insecticide. It's used
in closed spaces where the concentration of the vapors builds up.

I'd spray some permethrin-based insecticide in the vicinity,
and maybe even inside the unit.

The stuff is available in the form of bug spray which contains only
around 0.25% of the stuff. It leaves no visible trace and the sprayed
areas stay effective for weeks to months.


I see DEET affects plastics and lemon eucalyptus oil as well as DEET has
only short term efficafacy. So something lasting years looks unlikely.
Perhaps advise the owner to squirt permethrin aerosol in the vent slots
in a marked safe placeevery couple of months .
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Old January 6th 16, 08:21 PM posted to sci.electronics.repair
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Default Bugs in the machine.

In article ,
Kaz Kylheku wrote:

Would a bit of napthalene mothball keep spiders and other small creepy
crawlers out of the warmth of an always-on, so warm, bit of kit, or any
better ideas to keep bugs out of there.


Napthalene smells like **** and is a poor insecticide. It's used
in closed spaces where the concentration of the vapors builds up.


And, both acute and chronic exposure to it can do Bad Things to the body.

I'd spray some permethrin-based insecticide in the vicinity,
and maybe even inside the unit.

The stuff is available in the form of bug spray which contains only
around 0.25% of the stuff. It leaves no visible trace and the sprayed
areas stay effective for weeks to months.


Spraying the inside of the case might be sufficient.





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Old January 13th 16, 12:27 AM posted to sci.electronics.repair
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Default Bugs in the machine.


right live on Florida. Roaches slitherd into the speaker grilles on a Dell 1705E 2006. I imagined the unti was sealed of from insect excursions but not.

However was advised all the circuitry is sprayed with a waterproof clear polymer.
I see connectors not qualifying for sealed but prob not available for an outhouse or sewage flow.

Best....place the unit inside a sealed box at night, when your not using it. Rig a thru wall ac line sealed with silicone.

The roaches I experienced didnah care if I was at the keyboard or not.

Home Depot has an insecticide row.

My truck had underseat pillbugs or sowbugs or kin. HD has a container of white plastic insecticide structures. One placed under mat between seats killed the bugs where 2 other tries from Wal did not. No odor or gas release form under the mat.

Insecticides contained in a designed structure lasts longer than the spray insecticide. Controlled emission.



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