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Recommended methods for through-hole DIP IC removal
+1 for Dave's comment. Saving at the wrong side may be the cause for continuous pain. Metal dust is not the only problem with a Dremel, a Dremel, as powerful as it is, is per se not a tool for fine wo
+1 for Dave's comment. Saving at the wrong side may be the cause for continuous pain. Metal dust is not the only problem with a Dremel, a Dremel, as powerful as it is, is per se not a tool for fine wo
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Ansgar
· #8424
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Recommended methods for through-hole DIP IC removal
I am not sure whether to use a Dremel to cut off the chip legs is always the best method, but this is the way I am doing it if I am sure that the chip is gone. Extracting every pin individually is mor
I am not sure whether to use a Dremel to cut off the chip legs is always the best method, but this is the way I am doing it if I am sure that the chip is gone. Extracting every pin individually is mor
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Ansgar
· #8416
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HP 9835A Repair Success (Finally!)
I would just clean them (with isopropyl or maybe with contact spray). As far as I know the 9835 doesn't have the sophisticated hall-effect-style key mechanisms the 9845 has (which probably last foreve
I would just clean them (with isopropyl or maybe with contact spray). As far as I know the 9835 doesn't have the sophisticated hall-effect-style key mechanisms the 9845 has (which probably last foreve
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Ansgar
· #8411
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HP 9835A Repair Success (Finally!)
Hmmm looks like a good visual inspection always is the best point to start... I'll include that in my trouble shooting list 8-) Congratulations on a working system!
Hmmm looks like a good visual inspection always is the best point to start... I'll include that in my trouble shooting list 8-) Congratulations on a working system!
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Ansgar
· #8408
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BASIC/UX for s700?
cool
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Ansgar
· #8377
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BASIC/UX for s700?
Is it protected?
By
Ansgar
· #8375
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BASIC/UX for s700?
Didn't find any source for HP BASIC/UX or Technical BASIC for HPUX yet, as far as I can report none of the publically available media has it included. hpmuseum still is looking for media (see http://w
Didn't find any source for HP BASIC/UX or Technical BASIC for HPUX yet, as far as I can report none of the publically available media has it included. hpmuseum still is looking for media (see http://w
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Ansgar
· #8373
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HP 9000/220, video output problems
#hp9000S200
Don't think it is a mattter of sync. This would just cause screen flicker/movement and/or geometric distortions, but the characters would be stil readable. I can't see details (the definition of the i
Don't think it is a mattter of sync. This would just cause screen flicker/movement and/or geometric distortions, but the characters would be stil readable. I can't see details (the definition of the i
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Ansgar
· #8370
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IMSAI 8080
@Dave: well, I am ready to learn ;-) -Ansgar
@Dave: well, I am ready to learn ;-) -Ansgar
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Ansgar
· #8358
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IMSAI 8080
Amazing project. And impressively close to the original. Would effectively do it for the show case. But I am actually looking for the real thing (dusty, rusty, unreliable, and with S-100 bus :-)). I n
Amazing project. And impressively close to the original. Would effectively do it for the show case. But I am actually looking for the real thing (dusty, rusty, unreliable, and with S-100 bus :-)). I n
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Ansgar
· #8356
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IMSAI 8080
Guy, thanks for the quick response. Might be an interesting solution for many of us who depend on overseas shipments. I wasn't aware of that option. This helps at least for those sellers who simply do
Guy, thanks for the quick response. Might be an interesting solution for many of us who depend on overseas shipments. I wasn't aware of that option. This helps at least for those sellers who simply do
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Ansgar
· #8348
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Edited
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IMSAI 8080
Not directly related to HP, but I am looking for an IMSAI 8080 to complete my WarGames show setup. Possibly anyone has a hint where to find one of those. Just tried on eBay, but again the vendor didn'
Not directly related to HP, but I am looking for an IMSAI 8080 to complete my WarGames show setup. Possibly anyone has a hint where to find one of those. Just tried on eBay, but again the vendor didn'
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Ansgar
· #8346
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HP 9835A: One step forward, two steps back
If it is of help for you, you might want to check https://hp9845.net/9845/tutorials/analyzer I once have written a reverse assembler plugin for a 32-bit USB logic analyzer for the 9845 bus signals, wh
If it is of help for you, you might want to check https://hp9845.net/9845/tutorials/analyzer I once have written a reverse assembler plugin for a 32-bit USB logic analyzer for the 9845 bus signals, wh
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Ansgar
· #8322
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HP 9835A: One step forward, two steps back
Forgot to mention that also a faulty display circuit and/or CRT may be the reason that you don't see anything on the screen, but in that case you should at least be able to create a noticeable BEEP vi
Forgot to mention that also a faulty display circuit and/or CRT may be the reason that you don't see anything on the screen, but in that case you should at least be able to create a noticeable BEEP vi
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Ansgar
· #8314
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HP 9835A: One step forward, two steps back
Stan, possibly you should think about acquiring a logic analyzer for your setup. Don't get me wrong, it is always nice to have spare parts around and swapping them, but in the end you are dependent on
Stan, possibly you should think about acquiring a logic analyzer for your setup. Don't get me wrong, it is always nice to have spare parts around and swapping them, but in the end you are dependent on
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Ansgar
· #8313
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Colin Cantwell
I just received a message that Colin Cantwell passed away last month on May 21. For those who don't know about him, Colin played an important role in the design of the HP 9845C. With his enthusiasm fo
I just received a message that Colin Cantwell passed away last month on May 21. For those who don't know about him, Colin played an important role in the design of the HP 9845C. With his enthusiasm fo
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Ansgar
· #8218
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Edited
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PLAIN TEXT FILE TO RMB ASCII FILE
Hi Francesco, nice work! By the way HPDir has a conversion included, just use the -c command line option and HPDir does it for you. Surprisingly that option is rarely known. Example: If BLA is a file
Hi Francesco, nice work! By the way HPDir has a conversion included, just use the -c command line option and HPDir does it for you. Surprisingly that option is rarely known. Example: If BLA is a file
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Ansgar
· #8190
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HP 9845A Repair Follow-up
Actually I never detached the motor/capstan from the assembly. I guess it is similar to the HP85. But not all repair techniques require detaching the capstan. -Ansgar
Actually I never detached the motor/capstan from the assembly. I guess it is similar to the HP85. But not all repair techniques require detaching the capstan. -Ansgar
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Ansgar
· #8157
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HP 9845A Repair Follow-up
By the way, my experience when separating the CRT from the safety glass, for me it worked out easier to remove the gel when first heating it up a bit (no more than 80 degrees centigrade). Especially f
By the way, my experience when separating the CRT from the safety glass, for me it worked out easier to remove the gel when first heating it up a bit (no more than 80 degrees centigrade). Especially f
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Ansgar
· #8145
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Edited
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HP 9845A Repair Follow-up
Hi Stan, congratulations for the success! Well done! To your questions: 1) The display area used by the 9845A is significantly shorter that the full height of the CRT. Is this normal? Yes, it is norma
Hi Stan, congratulations for the success! Well done! To your questions: 1) The display area used by the 9845A is significantly shorter that the full height of the CRT. Is this normal? Yes, it is norma
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By
Ansgar
· #8144
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