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  #16  
Old 05-04-2010, 05:37 AM
Kiwick's Avatar
Kiwick Kiwick is offline
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Join Date: Mar 2007
Location: Italy
Posts: 448
Here's the Phonola set:

After drying, it worked with poor vertical linearity for a few minutes then the flyback's HV winding went in a huge cloud of smoke.
the HV winding in this set is a separate removable donut and will be easy to replace with a generic part.
The CRT is still very bright.

Notice how the goat immediately came to check the TV for edible parts as soon as she saw it

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  #17  
Old 05-06-2010, 02:43 AM
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Kiwick Kiwick is offline
slave to 3 equines
 
Join Date: Mar 2007
Location: Italy
Posts: 448
I replaced the HV winding and resoldered a dozen of dry joints under the tube sockets, the set then worked fine for several hours, then SNAP!! it started arcing occasionally between the damper's top cap and the HV cage,
I tried to insulate the top cap better but then it started arcing between the PCB track where the damper's top cap goes and a nearby ground track
I replaced the 220pf 4kv disk cap but it's still arcing especially during dark scenes...
the set keeps on going fine despite the arcing.

Maybe it's my replacement HV winding? or maybe the damper itself is to blame?
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