View Single Post
  #10   Report Post  
Posted to sci.electronics.repair
westom westom is offline
Senior Member
 
Posts: 238
Default TV turns off plugged into surge protector

On Sep 24, 8:20 pm, Archon wrote:
Read up on MOV's


Quoting from a company promoting a scam makes no sense. You should
"Read up on MOVs" and read the spec numbers. Take your own advice.
How do hundreds of joules in a Belkin absorb surges that are hundreds
of thousands of joules? It doen't. Why do you say otherwise? Because
Belkin told you how to think?

All appliances already contain protection. A surge too small to
overwhelm appliance protection, instead, destroys the protector. That
gets the naive to buy more ineffective protectors and recommend them.
Protectors that work by absorbing energy are a scam. And fail to
promote excessively profitable sales. Take a $3 power strip. Add some
ten cent protector parts. Sell it for a profitable $7 in the grocery
store. Or hype myths to sell that same protector for $40 or $150 to
the most naive.

Or learn what MOVs do when in properly earthed protectors. How to
make a 'whole house' protector even more effective? Increase its
joules. Then it will absorb even *less* energy during the same
surge. Learn from a company promoting a scam. Or learn from MOV
datasheets or even learn from Wikipedia. Effective protectors (and
that means a 'less than 10 foot' connection to earth ground) increase
joules to absorb less energy. Then the protector dissipates hundreds
of thousands of joules harmlessly outside the building.. 'Whole house'
protectors are sold by more responsible companies. Belkin is not on
that list.

What is necessary to protect the Belkin or Jo's cheap power strip
protector? One 'whole house' protector properly earthed to single
point ground.

For about $1 per appliance, a homeowner can earth one 'whole house'
protector that protects everything - more than just the TV. And that
remains functional even after direct lightning strikes. Lightning is
typically 20,000 amps. So the minimal 'whole house' protector starts
at 50,000 amps. 'Whole house' protectors make trivial surges
(hundreds of joules) irrelevant. And earth direct lightning strikes
without damage to appliances or the protector. But that means you
learn about MOVs and the technology from science sources - not from a
company promoting a scam.

Provided for Jo are possible reasons why a TV might cut out and why
unplugging resets a lockout function. A cheap protector connected
that TV directly to AC mains. Made no electrical changes. Protector
remains inert - does nothing - until 120 volts exceeds its let-through
voltage: 330 volts. That cheap protector is not modifying
electricity. Something else (maybe mechanical) would explain TV power
off.