Question about Televison & Video
TOSHIBA COLOUR TV 21N21 IC NUMBER 501
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Hitachi 27CX22B-501
You did not say whether it is bright, overdriven with retrace lines in it. I've have seen what I just described in Magnavox (common) and Zenith TVs. If you're unit looks like what I just described it could be one of the following problems. The fix for the Magnavox was a 10 ohm safety resistor in the green drive circuit (on CRT board). For the zenith it was the drive transistor on the main circuit board prior to the gun but after the video IC. In either case you will need an O-Scope to signal trace the video circuit to find the culprit. If this is within your expertise go for it, safely of course. If not, get a professional to do it.
Posted on Jun 23, 2006
SOURCE: TV was struck by lightning
If it was struck by lightning, the surge would completely fry the insides of your TV. Your TV probably won't work anymore and you may have to consider replacing it. Some TVs have accident warranties so something like this could be protected, but if not, you will have to purchase a new one.
Posted on Aug 27, 2007
You need to use Aiwa Service Remote to enter in service mode and adjust service data for red and Blue drive of CRT.
Do you have that remote and service data reference book of Aiwa tv ?
Posted on Oct 07, 2008
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