HP 9830A always turns on with blank display

Quite possibly. I don't know all the part numbers, but the '14-19P' souggests a size 14 shell with 19 plug contacts which is certainyl what you need. All I can say is that I needed ome of the panel-mounting socketts, I ordered the 'obvious' one from Farnell and it was perfect. If you need any help with the printer feel free to ask. I've doen a little owrk on them. As regards the HP9830, I find it best to take everything out of the case and give it a good clean. The memroy boards, both ROM and RAM contain MOS ICs -- and MOS ICSs that are difficult to get (the ROMS are custom, worse they are strange HP things so no normal EPROM will drop in; the RAMs are Itell 1103s which are not common now), so take anti-static precautions when removing said boards. I find it a good idea to remove the reap panel, strip the cooling fan and give it a few drops of machine oil (sleeve bearings). The tape drive is pretty reliable, being a reel-drive unit, there is no capstan nad pich roller, so the latter can't trun to goo ;-). The only mechanical parts that often fail are the O-ring 'tyres' on the drive wheels, these are a standard size and easy to get and fit. Electrically, the main problems are the optical EOT sensor, the bulb does sometime fail (it is still avaiallbe), and Rick Bos has reported problems with the LDR (I can't commonet on his repair as I've never needed to do it, but it looks very sensible). The dismantling procedures for everyything are in those HPCC Datafiel articles. -tony