Faulty HeadBoard?

[tigerwoodz]

View As Web Page Hi guys



I am in desperate need.


I have had the original head board for ten years. Fuses have been replaced numerous times. The last time the cyan/black fuse blew I changed the transistor and the fuse but it still didnt work. Y/M, Lc/Lm printed fine.

I replaced the head board along with all the head cables. Now the test print for magenta is only half a head and it leaves a blurry line next to the purge sponge.
When printing yellow overspray from star to finish.

I have contacted the company who supplied the board. They are unsure that it is theboard that is faulty, after reinstalling the old one, with M/Y working fine I can only see it being the head board.

Apologies for the essay, I would be very grateful for any help or advise


Many Thanks Stephen

 

[ChicagoGraphics]

From the looks of your test print your heads need some serious cleaning or new ones,

Welcome to Signs 101

 

[MrSalumi]

Thats a lot of dropout!

 

[DRW]

What machine do you have? In the first pic, the magenta in B may indicate a clogged damper. I've had that happen before on a vp-540. Do you have the correct cables in their correct slots?

 

[ProWraps]

that looks like a bad head/s to me.

 

[tigerwoodz]

The machine is an sj740 - it is approx 10/11 years old, I am currently in the process of refurbishing it

When I reinstalled the old headboard the magenta worked fine

I have changed all manifolds, dampers, caps, head cables, carriage board, head board cables.

The new board has a test date 26.12.12, is it likely to be faulty?