[TechAssist] Re: Sharp CL27S18 Just clicks
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 25 Jun 2003 23:14:29 -0400
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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SHARP CL27S18
Shutdown after 5 seconds
IC751 +9V regulator open
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SHARP CL27S18
Shuts Down - No Vertical Deflection
Sharp
Cold Solder On C517
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SHARP CL27S18
Powers up only for 1 second
John Lindberg
Solder bad at flyback
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SHARP CL27S18
Dead Set
Sharp
Zener Diode D717 [Rh-Ex0650gezz] Off Pin 2 Of Ic703.
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SHARP CL27S18
.Theory Of Shut Down Operation, (You Must Unplug To Reset)
High Tech Audio Video Sn91 Chassis
There Appears To Be Many Things The Safty Circuits Monitor That Will Trigger
A Latching Safety Shutdown. Once Triggered, The Set Must Be Unplugged To
Reset Before Next Turn On Can Be Attempted
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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
==========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd
----- Original Message -----
From: "Warren C." <warrenca@xxxxxxxxx>
To: "techassist" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, June 25, 2003 11:06 PM
Subject: [TechAssist] Sharp CL27S18 Just clicks
> Hi All
> Sorry I don't know the Chassis number.
> This 27" tv came in with only a few clicks when you try to power it up.
> We have another circuit board like this in the shop by chance.This one
> works if you
> jumper out the relay so we used it's flyback, hot, and SMPS regulator IC
> to try to
> get tv # 1 working. To no avail.
>
> Now the set clicks the relay when you press the on switch--deguassing
> coil makes it's
> humm for a few secs. then the relay clicks again. (releasing)
> This process will not repeat unless you unplug it from wall for a few
> secs.
> IC 750 has output of 9v present
> IC 751, & 703 0 volts present.
> We also don't have a schematic to properly start trouble shooting.
> Any help and or tips welcome.
> TIA
>
> Warren Campbell
> Campbell's TV & Appliances
> Cannington
> Ont.
>
>
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