if you can find a scart to composite s-video converter - im using ones with input output switches - that was when i blew teh lcd tv trying to conenct two sams to one tv channel - do not try that at home - or anywhere else for that matter i foudn the tv output was just liek the scart lead from this adapter into an lcd tv - worth a try?
On 02/06/2011, nev young <[email protected]> wrote: > On 31/05/11 16:40, Rich Mellor wrote: >> I just need to pick your brains if you don't mind (and maybe your spares >> pile)... >> >> I have replaced the TV lead from inside the power unit, and I get a >> picture on >> my TV. >> >> However, if the TV is tuned in properly - I get a black and white picture, >> otherwise the start up screen is very blue. >> >> Is there anything I can do - I had to remove the ROM and memory chips and >> reseat >> them to get even an ounce of colour on screen, but it may just be the TV >> needs >> tuning. > > It has been a long time but if I remember correctly the TV signal was > always very dodgy. First the lead from the power plug on the Sam to the > PSU wasn't screened so the signal could be too poor to carry the colour > part. I often used to shorten the power lead to about 18 inches to > overcome this. > > The other frequent problem I recall was on the Sam main board. On the > left hand side (see attached image) C43 and L1 used to cause loss of > colour. C43 needs to be the blue component, not the brown one, and L1 > should not be in a metal can. Don't even think about trying to change > these if you're not fully equiped with years of soldering experience and > a good temperature controlled soldering iron. The Sam PCB will lift > tracks and be destroyed more easily than almost any other! > > And anyway I can't think where you would get spares from. > > The best solution is and always has been, to use the scart lead. > >> >> There were two SCART leads with the computer, but neither seem to give an >> output. >> I seem to recall reading that the SCART is very different to normal. >> > The sam scart lead only goes one way. That is there is a Sam end and a > TV end. Put it the wrong way and it won't work. > > If you need to check your leads then the tech manual gives the pin > connections but not the cable details. I think it goes like this (but > no guarantee that I'm right) > > signal sam TV signal > Audio Right Out 01 02 Audio Right In > SPEN 02 NC Audio Right Out > Audio Left Out 03 06 Audio Left In > Audio Ground 04 04 Audio Ground > Blue Ground 05 05 Blue Ground > Blue TTL Out 06 NC Audio Left Out > Blue 07 07 Blue analogue > Red TTL Out 08 NC 4:3 / 16:9 > Green Ground 09 09 Green Ground > Green TTL Out 10 NC not used > Green 11 11 Green analogue > +5V In 12 NC not used > Red Ground 13 13 Red Ground > CSync Ground 14 14 Fast Blanking ground > Red 15 15 Red analogue > CSync 16 16 Fast Blanking > C.VID Ground 17 18 Video in Ground > +12V In 18 NC Video Out Ground > C.Vid Out 19 20 Video In > Bright TTL 20 NC Video Out > Ground 21 21 Ground > > NC = No Connection / not used > > > Hope this is of some help > > Nev > > > >
