[TechAssist] Re: Zenith PVY5270 Projo 9-1674 module
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 10 Jun 2005 13:40:21 -0400
Jury says FLYBACK (at least):
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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ZENITH 9-1674
Dead
John Kincaid Sos Tv
Problem Is Bad Fly And Hor Out Rebuilt Electrodyn Board Available For
$93 Exchange
9-1674-03 Didn'T Even Have To Do A Adjustment Field Repair Was
Easy
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ZENITH 9-1674
Dead
Marshfield Tv
Shorted Hot, 121-1167, Also B+ Rectifier Diode Crx3412, Ecg577, Lastly
Flyback 95-4134-15, Called Zenith, They Said Fly Not Sold As Replacement
Part, Could Only Buy Module. Called Signal Electronics 800-842-8240, They
Had Generic Replacement For -15/-21, Only $17, Worked Great.
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ZENITH 9-1674
Dead Emergency Tv Electronics
Emergency Tv Electronics
Horiz Output Was Shorted, Replaced H.O.T. Qx3200 (121-1167-01) Also Shorted
Diode Crx3412 B+ Pn: Used A Ecg580.And Ihvt Pn: 95-4134-15
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ZENITH 9-1674
Dead Set
Jerry - Vision Video Labs, Inc
Replace Flyback #95-4134-15, Bleeder Asy #A-17196-12, Crx3412 Use Ecg 577
1kv, 5a, 70ns Fast Switch, Qx3200=1167-01 Or 2sd2553
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ZENITH 9-1674
Dead. Fuse Blown
Jerry - Vision Video Labs, Inc
After Replacing Flyback, Hot, & Checking Standup Diodes, Check Qx3402. This
Was Shorted, All 3 Pins. Caused Immediate Line Fuse Blow. Use Original #
K790.
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ZENITH 9-1674
No Video Or High Voltage. Audio Is Ok
Doug - Vision Video Labs, Inc
Replace Flyback Xformer Tx3204 #095-04134-31. Found Pins 2 & 3 Read Low
Resistance To Second Anode. Hv Rectifier Diodes In Secondary Of Flyback Must
Be Shorted.
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Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
----- Original Message -----
From: "Paul Westcott" <westcott@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, June 10, 2005 1:01 PM
Subject: [TechAssist] Zenith PVY5270 Projo 9-1674 module
This set came in with shorted HOT and CRX 3412.
Replaced but still a no go.
The standby supply runs but the 115V supply doesn't.
There is no drive from ICX3401 to QX3402.
Is it possible that the above failures damaged the I.C.
or am I missing something else?
I see very few Zeniths and this thing is a pig trying
to service it on my knees.
Paul Westcott
Kingsway Electronics
1090 Kingsway
Sudbury, Ontario
Canada
Phone 705 566-9290
Fax 705 566-5349
westcott@xxxxxxx
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