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[email protected] stratus46@yahoo.com is offline
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Default TV buzzes with overly white video

On Jan 22, 6:48*pm, "Michael A. Terrell"
wrote:
wrote:

A pad shouldn't help as the 'automatic gain control' will just push up
the gain to make up for the pad. If it's in an extremely high RF
condition, the pad might help but it's rare to get that much signal.


GG


* *Have you ever tried a pad? *The AGC system in a TV is a very

basic
system that is designed to keep the level within a range, and

driving it
to the upper limit can cause sync buzz. *I have seen complex AGC

systems
with 14 op amps, and the DC offset was limited to 1.5 mV over the

entire
range. *It could maintain the output level to less than a .1 dB

change
over the entire useful RF input range. *You WILL NOT see a AGC

system
like this in a consumer level receiver.

--
Service to my country? Been there, Done that, and I've got my DD214

to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida


Yeah I've tried pads and they do make a difference if the signal is so
strong as to overload the front end but as I said earlier, that
condition is not very common. More common for the AGC to be pushing
the visual carrier to cutoff causing the buzz.

GG