"Repairing a broken CN4004 or CN5001 on a Sony VPL-VW12HT"
Video Doesn't Work If you are having this problem with your projector, the symptoms you will see are that there will be no video or impaired video in that one or more of the colors will not be displayed (R or G or B) on any of the inputs although the On Screen Display may work. The remote control and RS232 input can also be impacted. If you've had complete separation of the connectors, then the symptom will be that the projector will only come on for a few seconds and then turn off and the Fan/Temp led will flash. This is because the Fan connections and sensing also traverse this connection.
CN4004 and CN5001 The CN4004 and CN5001 on the Sony VPL-VW12HT projector can become unsoldered and broken due to stress on the 90 degree angle installation. It is possible to resolder the connectors if the proper surface mount solder tools are available. This assumes that the mounting tabs on the connector haven't become broken as well. This was my case and repeated attempts to resolder the connectors yielded only short term success as the stress on the connecter coupled with the heat inside the projector would soon cause it to separate again. Fortunately, there are little round test points for all 18 of the actual connections that are fed using the CN4004 and CN5001 and jumpers can be made using small wirewrap wire. The photos below document the procedure. (There are links at the very bottom of this page to the ultrahigh resolution versions.) As you can see from the last photo, the procedure works great and will probably yield a much more reliable installation. If you have any questions on what is shown here, please feel free to email me at Matt Dralle dralle@matronics.com
Need Help? If you're experiencing this particular problem and work shown is a little out of your comfort zone, I can perform the required modifications for a repair fee of $150 plus postage in both directions. I can accept M/C and Visa as well as Paypal as payment. Please contact me at the email address above to arrange the details.
Connectors Separated From PC Board
Q and C Boards with Connector Separated
C Board with Wirewrap Wire Soldered to the 18 Test Points
Detail 1 of Wirewrap Wire Now Interconnecting Q and C Boards.JPG
Detail 2 of Wirewrap Wire Now Interconnecting Q and C Boards.JPG
Q and C Boards Back In Projector.JPG
Q and C Boards Back In Projector Note Missing CN4004 (Q) and CN5001(C)
Jubilation When Projector Worked Again Following Reassembly
Point-to-Point Wiring Connections
CN4004 Schematic CN5001 Schematic
Ultrahigh Resolution Versions of Photos AboveThese are 2240x1680 resolution versions of the photos above in case you want to get a close look at a particular area on one of the boards.
-and-CN5001-(C).JPG)
