Member postings for Andy Tyrrell-Clark

Hi Clive,

Many thanks for your messages - I've sent you a couple of PM's

Just to be a little clearer - the current board has a 12 pin connector but the wiring only uses 11 of those pins - there is an unused pin between the power inputs to the board and the first of the harness wires going to the unit itself. It looks just like the wiring I've seen in pictures of Erskine Boards (pic below).

Many thanks

Andy

Hello Keith,

Many thanks for your response and the schematic which I had seen in the Hardinge user manual but unfortunately it doesn't appear to match my board which has significantly more components on it (approx 30 more resistors than appear in the schematic).

If I can't find the correct schematic for this board, it might have to be a case of replacing the whole board with an Erskine unit where at least schematics are available for future issues - probably not a bad idea as this one has obviously had a hole burnt right through the board at some point in its past.

Many thanks again

Andy

Edited By Andy Tyrrell-Clark on 20/04/2020 13:43:01

Hello

I am finally getting round to fixing an issue on the Bridgeport series 1 BR2J2 Mill I acquired a little while ago. I purchased it knowing that the power feed on the X axis din't work and had just used it manually.

I'm now trying to get the power feed working again and it looks to have fried the control board in the past - hence why it wasn't working. As you can see in the pictures an area near the connector block has had some issues and burnt (possibly from the micro switches both being on at some point). Looking at the back of the board this is clearly not the first time it's happened judging by how a few of the components are attached and the jumper wires used.  Obviously I'll test the micro-switches and motor etc in the unit before powering it up again if I can fix it

It controls a 6F (B or C) drive with a 12 wire connector

The problem I have is trying to track down a schematic for this board to try and figure out what the components that have fried were. It is not the common Erskine board that I have seen and I have been unable to locate images or schematics online that would appear to match this particular board.

Does anybody on the forum happen to know the make of this board and by any chance have either a photo or schematic so I can replace the burnt out components.

Many Thanks

Andy

Board front:

Burnt area:

Back of board:

Rear of burnt area:

Edited By Andy Tyrrell-Clark on 20/04/2020 11:09:31

Edited By Andy Tyrrell-Clark on 20/04/2020 11:11:18

Thanks for a very informative and insightful post John - you've given me plenty to think about.

Hello,

I'm new to the forum and just in the process of setting up a workshop at home. I'm currently looking for a second hand Meddings pillar drill but can't decide between the Driltru or M4 models. Both are well regarded by people and I know the Driltru started production about 10 years after the M4's but they both then carried on in production together for a good few decades afterwards.

Despite much searching online I can't seem to find any direct comparisons of the two drills and opinions on which would be the better model to buy (and more precise if there is a difference).

Assuming the two models were in a similar condition what are peoples thoughts as to which is the better drill to buy?

Many Thanks
Andy