[TechAssist] Re: JVC Home stereo/amp RX-208BK dead, 220VAC to home
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 2 Oct 2003 13:32:26 -0500
Seems to me you could connect the AC using a variac set to zero output and
bring it up slow while monitoring B+ output. Look at the main filter cap to
decide what voltage to expect. That H terminal could be a tap fro 220 VAC
operation in which case your output DC would be low.
Sent at 13:32 My Time
**************************************************
Jim Myers
Since 1972
Telrad Electronic Services Co.
Fort Wayne, IN 46815
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----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 02, 2003 10:49 AM
Subject: [TechAssist] JVC Home stereo/amp RX-208BK dead, 220VAC to home
The electric co goofed. Put 220VAC thru home. This Hi-fi stereo is dead.
the main power transformer primary reads open.
Transformer# ETP1150-47JAJ shows good number at Tri-tronics, lists over
$150.00, "not in stock, can be ordered"
The primary side pins of this transformer read open where the AC input
wires solder at terminals "D" and "C". But between terminals "D" and
"H" I get about three ohms. Id the D/H the actual input leads, and the
wires go to "D" and one "dummy" pin "C" where there is a thermal cutoff
device inside the transformer that internally jumps over to "H"?
(confusing!)
I would like to "bypass" this safety for testing to see if the trouble
goes on in the unit.
Could I simply connect the ac line to the two pins with continuity ?
Need feedback!
Phil Bader
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
For Professional Technicians Only
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