hueyjones70 Posted December 17, 2022 Share Posted December 17, 2022 I have the RN resistors, they only have 7 pins. I guess I will have to examine a standard PCB to find out which holes are extra. Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted December 17, 2022 Share Posted December 17, 2022 59 minutes ago, hueyjones70 said: I have the RN resistors, they only have 7 pins. I guess I will have to examine a standard PCB to find out which holes are extra. You may want to check the datasheet on the RN resistors. Something doesn't sound right. Best Regards, Brian Quote Link to comment Share on other sites More sharing options...
+LarryL Posted December 17, 2022 Share Posted December 17, 2022 4 hours ago, hueyjones70 said: I have the RN resistors, they only have 7 pins. I guess I will have to examine a standard PCB to find out which holes are extra. seems you have sourced the „bussed version“ of a resistor network, where all resistors have a common pin in a 7 pin network you will have 6 resistors in „star“ or „bus“ configuration, the seventh pin is the common pin. usually used as pull-up or pull-down for several signals here you need the „isolated version“ of a resistor network, where all resistors are in parallel (like in the KiCAD schematic) you will always have an even number of pins here - for 4 resistors you will have 8 pins of course you could solder individual resistors, standing upright regards Michael Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted December 17, 2022 Share Posted December 17, 2022 (edited) the resistors are not in parallel or series electrically within this network pack. They are isolated in a sip. https://www.easytechjunkie.com/what-is-a-resistor-network.htm you can have them in different packaging sip, dip, smd etc. or you can have them with no package at all and can see the resistors as components. see resistor array. check out near the bottom of each of these pages to look at a plethora of resistor networks/arrays and packaging http://www.interfacebus.com/resistor-network-schematic-isolated-resistors-sip.html Edited December 17, 2022 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted December 20, 2022 Share Posted December 20, 2022 The RNs that I have are the wrong strength anyway. They are 4.7K and are SIP that are for the 551 disk drive PCB. Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted December 21, 2022 Share Posted December 21, 2022 3 hours ago, hueyjones70 said: The RNs that I have are the wrong strength anyway. They are 4.7K and are SIP that are for the 551 disk drive PCB. It's up to you but I'd just get a bunch of 470 ohm resistors and solder them in. Some XL's had the resistor packs and others had individual resistors. I've noticed that individual resistors can be cheaper. 1 Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted January 6, 2023 Share Posted January 6, 2023 I finally got the board completely populated and it doesn't boot. I can't find any missing solder joints or solder bridges. It doesn't bother me so much that I spent the money for the board but I really hate that I expended the time and effort for nothing and I don't have the equipment nor the expertise to do a thorough job of trouble shooting. Quote Link to comment Share on other sites More sharing options...
bfollowell Posted January 6, 2023 Share Posted January 6, 2023 I wouldn't mind getting one of these, but the minimum order if five boards. So, with FedEx shipping, right now they average about $36 each. That's not too bad, but I don't want to be out $175 to get one board. If any of you want to go in together, I'd consider doing an order and re-shipping after arrival. If anyone is interested, let me know. If we can get enough in to fill an order, I'll consider it. Quote Link to comment Share on other sites More sharing options...
venom4728a Posted January 7, 2023 Share Posted January 7, 2023 I would pitch in for 1 800xl board. Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted January 8, 2023 Share Posted January 8, 2023 On 1/6/2023 at 4:39 PM, hueyjones70 said: I finally got the board completely populated and it doesn't boot. I can't find any missing solder joints or solder bridges. It doesn't bother me so much that I spent the money for the board but I really hate that I expended the time and effort for nothing and I don't have the equipment nor the expertise to do a thorough job of trouble shooting. What are the symptoms? Is there any sign of video activity? Can you use a cartridge and get sound? Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted January 8, 2023 Share Posted January 8, 2023 I have a black screen, no indication that there is a video signal. I tried to boot with Star Raiders and got nothing. Sys check doesn't give a video. I am going to check what I can using a multimeter and the guide from Sam's computer facts. I won't obsess over it because there just so many components that could be at fault. I know that it isn't any of the ICs because I checked each of them in another computer. Quote Link to comment Share on other sites More sharing options...
Beeblebrox Posted January 8, 2023 Share Posted January 8, 2023 (edited) Are you getting any sign of voltage passing through? Are the passive components used all new? And sockets look OK? Did you use an old delay line chip Incidentally? Also are all the passive components, (resistors and caps), orientated the right way where it matters? Edited January 8, 2023 by Beeblebrox Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted January 9, 2023 Share Posted January 9, 2023 I did use an old delay line IC but it worked in another computer. I made sure that my directional capacitors were oriented correctly. Resistors are not directional. Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted January 9, 2023 Share Posted January 9, 2023 6 minutes ago, hueyjones70 said: I did use an old delay line IC but it worked in another computer. I made sure that my directional capacitors were oriented correctly. Resistors are not directional. Do you have an oscilloscope? Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted January 9, 2023 Share Posted January 9, 2023 (edited) diodes be directional, logic probe if no oscope can let you know if theres a heartbeat of some kind Edited January 9, 2023 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted January 9, 2023 Share Posted January 9, 2023 I have only one complaint about the PCB and that is that the holes for the power port and the monitor port were too small and I had to spend a considerable amount of time filing down the pins so they would fit. Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted January 9, 2023 Share Posted January 9, 2023 I don't have a scope. Yes diodes are directional and the silk screening makes that easy to get right. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted January 9, 2023 Share Posted January 9, 2023 (edited) 5 minutes ago, hueyjones70 said: I have only one complaint about the PCB and that is that the holes for the power port and the monitor port were too small and I had to spend a considerable amount of time filing down the pins so they would fit. good move filing pins instead of drilling board. I seen folks kill vias and other fun damage drilling as they weren't realizing there can be connections using the hole. +1 Edited January 9, 2023 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted January 9, 2023 Share Posted January 9, 2023 (edited) 1 hour ago, hueyjones70 said: I have only one complaint about the PCB and that is that the holes for the power port and the monitor port were too small and I had to spend a considerable amount of time filing down the pins so they would fit. I am sorry to hear about the hole sizes. I will look into that right away. Edited January 9, 2023 by reifsnyderb Quote Link to comment Share on other sites More sharing options...
Beeblebrox Posted January 9, 2023 Share Posted January 9, 2023 (edited) 5 hours ago, hueyjones70 said: I don't have a scope. Yes diodes are directional and the silk screening makes that easy to get right. Meant diodes and caps (not resistors) earlier BTW. (Long day yesterday) If you don't have a scope as mentioned by others get a probe. They are dirt cheap and, alongside a multimeter have helped me diagnose some issues in the absence of a scope. So can you confirm voltage is passing through the board with a multimeter? Edited January 9, 2023 by Beeblebrox Quote Link to comment Share on other sites More sharing options...
BillC Posted January 9, 2023 Share Posted January 9, 2023 9 hours ago, hueyjones70 said: I don't have a scope. Yes diodes are directional and the silk screening makes that easy to get right. The USB oscilloscope/logic analyzer that connect to a PC don't have to be that expensive, but need a compatible PC for the display. They may not be as accurate/capable as a full size scope, but are better than a multimeter/logic probe. https://www.amazon.com/s?k=oscilloscope+logic+analyzer&s=price-asc-rank&qid=1673268685&ref=sr_st_price-asc-rank&ds=v1%3AoEY36D2CS%2FNaJ39lfM%2Ba%2B3ZgDTKj2kFwtwAmTetxVHQ Quote Link to comment Share on other sites More sharing options...
hueyjones70 Posted January 9, 2023 Share Posted January 9, 2023 I have voltage. 1 Quote Link to comment Share on other sites More sharing options...
+scorpio_ny Posted January 9, 2023 Share Posted January 9, 2023 Would you be able to post a picture of the front and back of the board? Quote Link to comment Share on other sites More sharing options...
CJ Atari Posted May 11, 2023 Share Posted May 11, 2023 Checking on the board - has anyone been able to make it work? Was thinking of getting it. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
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