Mitsubishi WS65613 Input/Synch Problem

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Mitsubishi WS65613 Input/Synch Problem

Hello all, I recently aquired a WS65613 with a problem(s). The unit does not have the Blinking Green Light of Death. On plugging the unit in, the light flashes and eventually stops. I presume this is the unit booting. However, upon powering the unit on, if the selected input is an A/V input, the unit will present a blue screen as if there is no input even though there is A/V going to the connection. The blue screen also appears to be 'wavy' as crts used to when there was stray hum getting into the ps. I can also access the system menus and they display fine.

If I change the input to the DTV Antenna, I will hear a digital whine and the screen will display text showing the station selected but the horizontal synch is off as it quickly rolls and the vertical synch is also off as it does a slow roll. I can also access the system menu in this mode as well but as mentioned earlier the h/v synch are off.

 I did research on this board to see if I could find any one who has had similar problems but I was unsuccessful. Has anyone had a similar experience and could perhaps point me in the right direction to look? I am not a stranger to troubleshooting electronics as I was a broadcast engineer for many years but I was hoping I could save some time if someone has run into this before.

 Thank you everyone in advance.

Mike

 

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