elfyhead
New member
bought a non-working DK3, along with a DK logic board set (the whole thing was a throw-in on a purchase of a q*bert, and the cabinet is in good shape, and the monitor looked to be in good shape as well).
the monitor didn't come on at all. so i took it out of the cabinet, and took the boards completely off the monitor to check things (man that is an awkward board set to work on!). following the troubleshooting guide, i found a bad resistor at R601, so i replaced that, and i thought while i had the boards out i'd re-cap it as well (with bob roberts' deluxe kit). when i was done with that i thought i'd plug it in before i reconnected everything, to save myself the hassle of having to take it all apart again, but when i did it immediately blew the AC fuse.
now, i admit to being a neophyte when it comes to power circuits (i have an EE degree, but all digital except for a power lab class 25 years ago, and i haven't been using *any* of it in practice for 20 years or so), which was maybe why i thought i'd be able to test the circuit without the monitor attached. was this a really stupid thing to do? and if so, will it be OK to just replace the fuse, hook everything back up, and test it then? or is it OK to test the circuit not attached to the monitor itself, and the AC fuse blowing is just an indication of something bad elsewhere?
thanks in advance.
the monitor didn't come on at all. so i took it out of the cabinet, and took the boards completely off the monitor to check things (man that is an awkward board set to work on!). following the troubleshooting guide, i found a bad resistor at R601, so i replaced that, and i thought while i had the boards out i'd re-cap it as well (with bob roberts' deluxe kit). when i was done with that i thought i'd plug it in before i reconnected everything, to save myself the hassle of having to take it all apart again, but when i did it immediately blew the AC fuse.
now, i admit to being a neophyte when it comes to power circuits (i have an EE degree, but all digital except for a power lab class 25 years ago, and i haven't been using *any* of it in practice for 20 years or so), which was maybe why i thought i'd be able to test the circuit without the monitor attached. was this a really stupid thing to do? and if so, will it be OK to just replace the fuse, hook everything back up, and test it then? or is it OK to test the circuit not attached to the monitor itself, and the AC fuse blowing is just an indication of something bad elsewhere?
thanks in advance.