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  #16  
Old 02-04-2016, 11:42 AM
dieseljeep dieseljeep is offline
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Quote:
Originally Posted by Electronic M View Post
Dude...It's just a 15 year old BPC!...I can go out any day of the week and get 10 working ones just like it for free....Hell when I see a BPC on the curb I don't even test it (if I even stop), but instead just rip out everything except the cabinet and CRT to use as parts for mid 70's and older sets that actually have some value.
You might be seeing more "curbside setters" as Best Buy quit taking in TV's and computer monitors for recycling, free. They now going to charge $25.00, just like others do.
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  #17  
Old 02-04-2016, 12:13 PM
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jr_tech jr_tech is offline
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So after resoldering the board conenctions, cleaning the crt pins, the cathodes took a bit of running at normal voltages to recover?

jr
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  #18  
Old 02-04-2016, 12:28 PM
old_coot88 old_coot88 is offline
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That's as good a explanation as any.
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  #19  
Old 02-05-2016, 04:03 AM
Dude111 Dude111 is offline
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Quote:
Originally Posted by old_coot88
.....Don't know how long it will last, though.
Screen shot attached.
Excellent!!!

I hope she is happy now and will give you excellent quality for along time
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  #20  
Old 02-05-2016, 09:39 AM
old_coot88 old_coot88 is offline
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Yeah, hope so too. When it was doin' the original 'cycling' act, there was no perceptible change in the heaters' normal healthy orange glow. A "Lazarus" CRT is real puzzler for sure.
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  #21  
Old 02-05-2016, 06:28 PM
zeno zeno is offline
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Newer sets do some strange crap. I had a few of this vintage Sony
with a small ( H & V ) & messed up raster. Who would suspect a bad tuner ?
The data line to the tuner would short & none of the IC's such as
the jungle would get the preset data from the E-prom. So you had to
change the tuner / IF & it just cost too much. Odds are it was a
chip in the tuner shorted but probably a SMD & not available.
BTW to trouble shoot just unsolder the CLOCK, DATA & ENABLE
pins at the tuner. If it gives a full raster its the tuner.......

73 Zeno


Quote:
Originally Posted by old_coot88 View Post
Yeah, hope so too. When it was doin' the original 'cycling' act, there was no perceptible change in the heaters' normal healthy orange glow. A "Lazarus" CRT is real puzzler for sure.
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  #22  
Old 02-06-2016, 07:45 AM
kf4rca kf4rca is offline
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Have to remember that one. Thanks.
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  #23  
Old 01-22-2017, 07:16 PM
old_coot88 old_coot88 is offline
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A question for Zeno

Zeno, you being the resident Sony guru, lemme pick your brain a bit. The jug in this Wega KV-20FV12 is starting to get a little soft again. Before I think about pulling the back again, is there a heater series resistor? I can't find a schematic anywhere showing the CRT area. Presumably the resistor would be on the CRT socket board.

I know some other brands had 'em. Having retired from the repair trade in 1986, I'm not overly knowlegable on newer stuff.
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  #24  
Old 01-22-2017, 09:41 PM
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Findm-Keepm Findm-Keepm is offline
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Quote:
Originally Posted by old_coot88 View Post
Zeno, you being the resident Sony guru, lemme pick your brain a bit. The jug in this Wega KV-20FV12 is starting to get a little soft again. Before I think about pulling the back again, is there a heater series resistor? I can't find a schematic anywhere showing the CRT area. Presumably the resistor would be on the CRT socket board.

I know some other brands had 'em. Having retired from the repair trade in 1986, I'm not overly knowlegable on newer stuff.
3.3 ohm 2W resistor, R718 or R71B, depending on how the CRT board is marked...off pin 7 of the CRT socket.
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  #25  
Old 01-23-2017, 12:30 AM
old_coot88 old_coot88 is offline
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Wow, thanks. May be able to milk the old jug a while longer now.
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