I have a 14 inch Phillips colour TV with RGB input that used to be used with my QL. The TV tuner has died, but it should work fine as a monitor. Free to anyone who can be bothered to come to Watford to colllect it.
regards Jeremy Robert Newson wrote: > Tony Firshman wrote: > > ... > > >>> I've had to resort back to my hacked (personal mod [again]) Phillips TX B&W >>> TV (hacked in a Video input to bypass the demodulator which doesn't work) as >>> my colour monitor died when I tried to use the QL after a long break >>> >>> >> I wonder whether it is related to my Ferguson colour TX TV circa 1985. >> The pcb was laid out to support RGB input - even with a modulator >> disable pad. I zapped my RF modulator on this by dropping the disable >> wire on a high voltage. It worked fine (and still is) with a >> replacement module. >> > > My Phillips also had colour support on the main PCB (components marked but > not filled). The demodulator used to work AFTER I had put in the video-in > socket complete with a switch to change between the demodulator & the socket > so it could still be used as a TV when required (rarely). Then the > demodulator died - don't know when as I hadn't used it for ages when I tried > it. > > >>> (having >>> finally got a replacement GC battery); the QL started playing up at around >>> the same time. >>> >>> >> Systems areOK with no GQ battery. You just lose the clock protection >> etc. >> > > When I first removed the dead battery, the QL initially played up on > re-inserting the GC before it settled down to working properly again. I > finally got round to getting a new battery for the GC and it was after > inserting that when re-inserting the GC that the problems started...perhaps > I could take it with me to work tomorrow and have a look at it when I get a > chance (got mains on my coach...). > > At one stage I did bend one of the pins on the connector when re-inserting > the GC, but I don't remember the kind of crash I last had. I straightened > said pin and all was AOK. > > ... > >>> I have just tried to re-insert the GC and it crashes on boot. Without it, >>> it booted ok, so haven't tried to re-re-insert. Have subsequently tried ICE >>> ROM and it has booted ok. Would poss suggest GC, but that *WAS* checked and >>> found Ok - implying poss fault on expansion port of QL? >>> >>> >> Yes indeed. I bet it is that. >> Slightly bent pins can cause poor contact. It looks like GC and its >> connector are OK as you have had it checked. >> It could even be a pin bent right out of the way. That is very easy >> with ones near the end, Typically they bend into an L shape. ie a bit >> flat and the rest still straight. Often it can short against a >> neighbouring pin causing the QL to fail (or crash - as you found). >> If a pin is bent, then take the board out of the QL, and bend and >> straighten the pin very very very very carefully - they are brittle and >> you will probably only get one chance to bend it. Tweezers and >> jeweller's screwdrivers will help. >> > > Last time I did that it didn't seem that brittle...I'll have to take it > apart again and check the pins. > > >> I have seen (and repaired) dozens of QLs with this fault. >> >> Of course as well do the std things - like cleaning chip legs (with hard >> rubber) - 8302 is especially bad, and re-seat chips, heat sink compound >> under the 5v regulator, cable from regulator to ram 5V (this was on >> later boards) and mains filter. Mind you if you have a std US QL then >> it will have loads of mods, including filtering components. >> I think I say this and more in my QL troubleshooting guide on my web >> site. >> > > Years ago (before expaning my QL) I had the QL failing quite regularly after > a few hours of use. Taking it apart, I reseated the chips and it worked > better thereafter. I can't remember if I did that or not this last time. > > >> You could even bring it to the next North American QL show. Watch this >> space.......... >> > > Long way to go from South Norwood, London, England - Tring's much closer > (camped near there when I was in the cubs, travelling in the back of a > removal lorry, sitting with the rest of the pack on our kit bags, with the > top back doors open...oh such memories...oh such abandon...these days kids > go by luxury coach - missing such pleasures...)! > > Robert > _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
