stardot.org.uk

If you order another batch.....count me in please.

Thanks

Dave

Thanks for the clarification folks...

Dave

Hi again,

I can’t find 33uF ceramic capacitors on EBay, could they be 33nF.....?


Dave

Here it is, in my plus3, I must have updated it.

Dave

Da Dah........It’s ADFS V.1.00 1983...

Thanks everyone

Dave

Thanks everyone, I’ll give it a go....and let you know.

Dave

A couple more questions...please. 1) What would happen if I put the chip into a rom programmer and tried to read it...if it’s not a rom.... 2) What spec would I order for the decoupling capacitor.....is it 33uF.....voltage.....construction. 9FC6FF11-3C57-4789-A5C2-1010F507AED5.jpeg Thanks again Dave

Hi Folks, Can anyone tell my what this rom is for, I’ve been tidying up my bits n pieces and can’t ID this one. 7F27BE05-1D8D-46EE-A400-C6727988112C.jpeg And what this is, there are lots all over the board, marked A, this one has broken off . 49E09B03-FACC-4180-A7CC-95F910A0E886.jpeg Thanks Dave

Really looks bad, I’d get it looked at......

As Prince Philip once said “ Looks like it was wired by a cowboy “.....

A lot of ships bitd had these fuse carriers, bloody nightmare when they cracked and broke in your hand.

Dave

Similar to my problem, checkout my experience here.......


viewtopic.php?f=3&t=20565#p288715

Good luck

Dave

SOLVED....

I decided to socket and change IC8 first and BINGO......IT WORKED.

Thanks everyone for your suggestions and help.

Another Master 128 lives to fight another day.

Dave.

Thanks for the info MJS,

I’ll be checking what I need and ordering bases to suit.

I may try reflowing, just in case I’m lucky, then change them one by one.

Dave

Hi folks,

I’ve checked the battery connections, belled out the tracks......all ok.

I’ve also swapped over the mainboard to my working master 128 and the problem is still present.

Is suppose I’ll have to replace the above IC’s one at a time....

Dave

Thanks guys.....I’ll have a look at your suggestions this morning.

Dave

Hi Folks, I was given this master 128 and can’t find a solution to the problem, can anyone help please. It appears that the configure settings are scrambled and won’t reset. I have checked the keyboard and MOS 3.2 chip on working 128, a new backup battery has been fitted, the voltages are ok when sw...

Hi Simonm, I was aware of CJE micros modules, £30, this is why I went the home made way. Here is my effort mounted on the back of the backplane for testing. E226A02A-CCD6-4C9B-ACA9-EB3A3DDC0FC0.jpeg I would still like to have a couple of proper pcb’s made up, I’ll have to try again with the software...

Hi there, I had the exact same thoughts with my Riscpc last month, I bought a couple of boards but the chips I had were too big to go onto the board, so put the idea to one side and built a couple of rough prototypes which worked a treat. I played with a couple of pcb design apps but could not get t...

PM sent.

Thanks Ian,

Dave

Hi Ian,

Yes I found that but it’s the through hole equivalent I’m looking for, for my wee test project.

Dave

Hi folks, I’ve been having problems with the SMD components on the CMOS/RTC circuit, some pads have gone,it’s down to earth somewhere etc., and I am going to build a small test board using through hole components. My problem is, I can’t find enough info on the diode D2 to pick an equivalent.The thre...

PayPal is good for me, thanks.

Dave

Hi again, I received my new/old CD-ROM drive, attached it to a duel ide cable, switched on and configured a CD-ROM drive from the drive settings. I got the icon up ok and the drive makes all the normal noises, but it doesn’t read the disc, says it’s no good, the disc is ok. I’ve tried it as, master,...

Hi there, this sound promising,

Could you put me down for one too please.

Dave

Thanks guys,

I’ve ordered an old cd rom Drive from eBay, only £10 inc postage.

So even if it doesn’t work it will fill the hole nicely........

Dave

Hi there, Is there a list of Riscpc compatable cd/dvd rom drives. I’ve just bought a strongarm rpc on eBay and it has no CD-ROM installed, just a big hole.... I’ve had a look on the forum but can’t see anything definitive. EDIT....Do rewritable ones work too. Does the speed matter ie 52x etc. Thanks...

Hi there, Put it in a safe place, your interest will come back at some point, and you will have all the equipment to get going . I dumped all my beebs, masters and some upgraded arcs about 10 years ago when I got divorced and moved home, BIG mistake, last year I found my original Electron and a box ...

Thanks for the info.....

Dave

Hi folks, A quick update.........Tah Dah...... 809CD0EE-2549-4304-A930-1164665456F9.jpeg After a couple of minor adjustments. That is yellow sleeving on very thin wires, not 2.5 twin and earth.... :lol: DF274427-165D-487A-8908-660EC1EEA5FD.jpeg Continuity was ok for pins 1 and 2 from the back of the...

Thanks Phil,

I’ll start with checking the continuity under the board, if I can go that way I’ll have to look into purchasing the , pin vice, kapton tape and roadrunner wire, these are all new to me.

Thanks for the tips, the link to your repair will be a good reference.

Thanks

Dave