UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Ken · 6th Aug 2017, 5:35 pm

Hello Jay,
Thanks for the information and the link. I don't have a logic probe but the in your link looks easy to make. I don't suppose the transistors are critical. I've got lots of bc108 but no bc171s. I'll build it with bc108s an see if it works. I too am hoping it's not the ula.

Hello merlinmaxwell,
I have an analogue multimeter so can try your suggestion.

Thanks to both. I'll report back.

Regards,

Ken.

6th Aug 2017, 5:35 pm	#59
Ken Hexode Join Date: Oct 2003 Location: Near Glasgow, UK. Posts: 309	Re: Sinclair ZX81 Hello Jay, Thanks for the information and the link. I don't have a logic probe but the in your link looks easy to make. I don't suppose the transistors are critical. I've got lots of bc108 but no bc171s. I'll build it with bc108s an see if it works. I too am hoping it's not the ula. Hello merlinmaxwell, I have an analogue multimeter so can try your suggestion. Thanks to both. I'll report back. Regards, Ken.