Hitachi Dy-32v 110 Svc for 36UX01S television

On Fri, 5 Sep 2008 09:22:49 -0600, "Not Really Me" put finger to keyboard and composed:

The supply to the vertical output chip is usually taken from a winding on the flyback transformer. The pulse is rectified by a diode and the rail is protected by a low value fusible resistor, usually only a few ohms. I'm guessing that the "DY" in the part number/description refers to Deflection Yoke, "32V" may refer to the voltage rating (?) or the size of the CRT in inches (?), and 110 may be the size of CRT in degrees.

In fact the parts list in the service manual has three occurrences of E601:

E601 BY00821 DY-32V 110 SVC E601 AZ00102M PROTECTOR(CRXT491001)

and

E601 BY00821 Deflection Yoke Assy.

So it looks like two items have erroneously been given the same circuit designation.

You should be looking for a protector device, ie the AZ00102M which sells for $2.95, not a BY00821 deflection yoke costing $93. A low value fusible resistor should do the job. I'd use circuits for similarly sized CRTs (36") as a guide. The "1000" in the circuit diagram may be a current rating in mA. You can use an ordinary 1A fuse while troubleshooting to verify that the IC and yoke are OK.

- Franc Zabkar

Thanks so much Frank. I knew it showed up multiple times but didn't see the protector description. That makes a lot more sense.

Scott

No fuse handy, but a 5 ohm resistor clipped across the device makes the vertical drive work. I'll order and replace the part. Thanks to you I guess I'll keep this out of the recycling for another while.

Scott