Excessive current in the LD drive

[ctptech]

Good day all . Got this error on 03 board , swopped board to position 4 now displaying 04 board is at faulty so looks like a expensive fix . The machine was working fine then put into storage for a year then when I tried it I had this. Can these boards be repaired or can the error be bypassed and run less channels . Thanks in advance

 

[smalloffsetpressexperts]

Google ld driver board repair

 

[ctptech]

hi , I have but there’s nothing coming up . Can’t see anything in the board that’s obvious like browning .my local guy won’t take on anything with micro components

 

[TJPrinter]

I have no idea if these folks can help you but they have repaired several boards for me.
Hytec

 

[smalloffsetpressexperts]

hi , I have but there’s nothing coming up . Can’t see anything in the board that’s obvious like browning .my local guy won’t take on anything with micro components

About 12,900,000 results (0.51 seconds) when I google ld driver boards. Who makes the board? Do you see any markings on the board or componets?

 

[ctptech]

I took the board to a guy who a few press guys use and he’s replaced a mosfet as it had a bit of browning but says it hadn’t totally failed but when I put it back in it failed sane again excessive current error so a bit stuck now .

 

[smalloffsetpressexperts]

I took the board to a guy who a few press guys use and he’s replaced a mosfet as it had a bit of browning but says it hadn’t totally failed but when I put it back in it failed sane again excessive current error so a bit stuck now .

Hope this helps:
What happens when a MOSFET fails?
Testing a MosFet
When MOSFETS fail they often go short-circuit drain-to-gate. This can put the drain voltage back onto the gate where of course it feeds (via the gate resistors) into the drive circuitry, possibly blowing that section. It will also get to any other paralleled MosFet gates, blowing them also.
A good MOSFET should have a reading of 0.4V to 0.9V (depends on the MOSFET type). If the reading is zero, the MOSFET is defective and when the reading is “open” or no reading, the MOSFET is also defective. When you reverse the DMM probe connections, the reading should be “open” or no reading for a good MOSFET.Mar 14, 2015

MOSFET driver: a common cause of failure

(Bild: IB Rehm) Reliable power supplies are a basic requirement for low failure rates of electrical appliances. This article explains typical power supply problems and how to avoid them.

www.power-and-beyond.com

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