GBC Stream Punch with No Power

[panashiba]

I was wondering if anyone has run across this at all. I only have one of these in the field that we inherited and it just lost power one day. It has 120v coming into the Main board and up to the small Power Supply above it. But, it has no DC voltage coming out of that Supply or on any other connectors on the Main Board. I checked the Service Manual and it states that I must have 2 of the 3 lights on the Main board and if not, to replace it. I ordered a new Main board since all voltages coming in and all Switches are fine and the new board did not fix it. I was going to go with the Small Power Supply next but wanted to see if anyone else has had or seen this before I waste any more money. Thanks.

[NCArt]

That would be the next thing to replace. Is this the GBC I or III? If it is the I, watch how the main motor spins once you get the Small PS in there. Every once in awhile, the one we have in the field will rotate in reverse, causing jams. It started doing this after we replaced the Power Supply board.

[panashiba]

Thanks. It is a III. I will order that PS and see what happens from there. Thanks again.

[pspahr]

Thanks. It is a III. I will order that PS and see
what happens from there. Thanks again.

Had a GBC II and III in the field on a Ricoh 1075. Both failed horribly in the following ways:

Relay on PSU overheated, melted clear cover and harness closest to it and shorted together....Found that the solenoid that pulled the paper stop into place was clogged with chads and overheated the circuit.

Also, the plunger in the solenoid wears out the linkage attached to it, causing similar issues.

I've seen many other issues, from poorly designed interlock switches burning out the main board to brackets that don't hold tightly enough to the base machine.......

However, do the adjustments for the back gauge (paper stopper) properly, lubricate it well, and check for chad buildup every visit, set the levelers so that the unit is level with the main body of the machine--not level with the floor (seriously, most techs don't check machine level as it's usually not an issue, but if thats the case make sure the GBC line up with the machine).

Also, on the input guide into the GBC we added a strip of mylar cut to shape to insure paper didn't dive while driving into the unit. Wish I had pics of that because it seemed to help a bit and was easy to do.

[FRIDGEMAGNET]

This is probably an obvious one - but have you got the mains switch behind the front door on - this has fooled other techs.

[panashiba]

I have checked the main switch. It is working properly and letting voltage thru to the board when cycled. The main issue is that I have 120v going into the Main and P.S. but no DC voltages coming out of either of them.

[FRIDGEMAGNET]

That kind of indicates that either the PSU is faulty or something is dragging the DC voltage down. Try disconnecting everything from the PSU and measuring outputs.
My guess would be the PSU is faulty.