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SHARP 28hw 53h stuck in standby

 
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jollyroger
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PostPosted: Thu May 18, 2006 9:06 pm    Post subject: SHARP 28hw 53h stuck in standby Reply with quote

Hi

Can anyone help me to resolve this

Thanks
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gary



Joined: 05 Apr 2005
Posts: 584
Location: MANCHESTER, uk

PostPosted: Thu May 18, 2006 9:50 pm    Post subject: Reply with quote

check line output transistor for short circuit, if it is relace low voltage caps in line drive circuit particularly on the -10v rail, will also probably have damaged e-w correction transistor , loading coil and other parts in circuit, check to see if ovp diode across c720 on print side is short circuit if it is replace the optocouplers in the psu.
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