[TechAssist] Re: Sony KPR4620 No Video but OSD
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 15 Oct 2005 09:34:20 -0400
Tips !
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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SONY KPR4620
Video, No, But Has Osd & Sound
High Tech
Cp6001/6003 0.8a Micro Fuses On Convergence Board, Especially If The 18v
Supply On Main Board Was Just Fixed
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SONY KPR4620
Video No Go - Has Sound
Either Ic6 Or Cp Fuses May Be Shorted. Replace Both Ic6 Convergence Ic'S
(Pn: 874994121) Stk4121-Ii And Cp1 Through Cp6 Fuses. (Note: In Newer
Models Co Fuses Have Been Eliminated By Circuit Improvement)
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SONY KPR4620
Shuts Down. High Voltage Comes Up And Shuts Down, Repeats, No Sound, Sleep
Lite On
Bryn Mawr TV
Open F3 On Deflection Cba (Gma2.5)
Shorted Convergence Ic'S Ic6006,Ic6008 (Stk4121mk2)
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SONY KPR4620
Video & Sound, No
High Tech
L5008 Opens Due To Heat From D5017, Use Fr107 Or Fr307 Repl Because It Runs
Cool (L8) in 15v scan supply
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SONY KPR4620
No Video Or Audio
Replace L5008 And L5007 Off Of Flyback
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SONY KPR4620
Dead Unit
Caution Around Power Board--Holds Charge Of 330 Vdc!
Bad Q5601 Str8124-R, C5604 4.7/350v, C5603 4.7/350v, Ic5001 Chip
Upc1377c/Nte1724. Conv. Chips Ok , But Found Lots Of Bad Sony Type Fuses
On Conv. Board. (800ma Fuses)
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==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
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----- Original Message -----
From: "Valley TV" <valleytv@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, October 15, 2005 7:53 AM
Subject: [TechAssist] Sony KPR4620 No Video but OSD
> Hi everyone..Happy weekend!!!
>
> I have a call later today on a KPR-4620 with OSD and audio but no video.
> I can remember changing a diode and coil on this model for no video but=20
> cannot remember if that set had OSD.
> Any thoughts??
> TIA!!!
>
> Gary
> Valley TV
> Drums, PA office
>
>
> --=20
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