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Old 02-09-2008, 10:38 AM
Mike Stamper Mike Stamper is offline
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Join Date: Oct 2007
Posts: 17
Here are some fresh voltage readings. All tubes connected, including the HOT plate:

Pin 2 V14/6sn7 (plate of horizontal discharge; 65v expected):
-Drive at minimum: 34v
-Drive at midpoint: 48v
-Drive at maximum: 62v

Pin 3 of 6bg6 (14v expected):
-Drive at minimum: 13v
-Drive at midpoint: 14v
-Drive at maximum: 15.4v

Pin 5 of 6bg6 (-7v expected):
-Drive at minimum: -0.9v
-Drive at midpoint: -0.7v
-Drive at maximum: -0.5v

Pin 8 of 6bg6 (255v expected):
-Drive at minimum: 289v
-Drive at midpoint: 282v
-Drive at maximum: 275v

The above readings were made with no signal. Introducing a test pattern made little difference. Changing the brightness made no difference. HV output (as measured at the HT lead) was about 7,500 volts (10,000 expected). I replaced the 560k resistor with another 560K. No change. All caps replaced. All out of tolerance resistors replaced. Flyback is a new FLY-51. 6bg6g is new. Does any of this help? Thanks.
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