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I'm back up and running YEAH, back up and running and the black/cyan head is working great! Apparently before Fuse F3 blew, transistor TR7 (Sanken 2SC4131) shorted out. Fortunately, I found a source on ebay, Dalbani Corp. in Miami, FL, that sells 2SC4131 (5 for $18). So I replaced TR7 and...

Oops sorry. As 'DigitalsolutionsOK' AND 'kffernandez' predicted, I did indeed blow the F3 fuse.

As Kelly predicted, I did indeed blow fuse F3 on the main board. Hopefully the transistor amplifiers were not effected, although I've seen some discussions where the power transistors were taken out. For what it's worth, I believe the fuses are KOA Speer Electronics P/N CCF1N1TTE (N for...

argh, I am not equiped to do surface mount repair work. I did do a rinse in isop alcohol but I didn't allow it to dry overnight. Is there an easy way to test the head to see it it is shorted out? I had a thought though. If I put the magenta/yellow ribbon cables on the cyan/black head...

yes, I turned off the sub power, then the main power, then I pulled the plug. One thing I was not able to do was step 21 under 3-1 head replacement. Under the user meny, select [Ink Control] > [Head Replace] [Enter] This choice is not available in my menu choices. Perhaps I am behind on...

SP-300V Well . . I finally convinced myself that I could remove the black/cyan print head and dip it into an ultrasonic cleaner. Just a few mm like all the threads said. Then I reinstalled it and ran a cleaning cycle then a test print. Absolutely no black or cyan printed. Repeat this 5...

Hi, folks. I apologize if this has been covered in the past but my searches have not turned my specific problem up. I am helping some friends bring their SP-300V back to life. When I started, none of the heads were printing and the ink lines were filled with air. After replacing a few of...