But I wonder, how do you do a computer haul with her? -Rik Van: VintHPcom@groups.io <VintHPcom@groups.io> namens Rik Bos <hp-fix@...> Verstuurd: zondag 29 mei 2022 00:15 Aan: VintHPcom@groups.io

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Great, I love it! -Rik

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Those so called japanese putty knifes. You can get them in different sizes, even the pre- rusted very small ones for a Tipolino ;p -Rik

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Hi Stan, 1. About 60C just touchable 2. I used a hot air blower on the front, I made a small fixture to keep it in place. 3. That depends on the type of polymer which is used but it takes me normally

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The 9845 tape drive is the same as the 9825 tape drive. It is fairly simple to remove the motor unit, you have remove the 3 screws at the underside which hold the motor. Be careful with the opto diode

Oeps wrong group.. Van: VintHPcom@groups.io <VintHPcom@groups.io> Namens Rik Bos Verzonden: zondag 22 mei 2022 22:54 Aan: VintHPcom@groups.io Onderwerp: [VintHPcom] Gezocht 1.3 of 2.3GB MO drive Ik be

Ik ben nog op zoek naar een 1.3 of 2.1 GB MO drive het liefst SCSI maar IDE mag ook. Als iemand er nog een heeft liggen dan houdt ik me aanbevolen. Intern of extern maakt niet uit. -Rik

Does anyone have a copy of the ERS or diagrams of the 12745A HP-IB 13037 interface? I have a working 7906A with a 13037D interface with a 12745A HP-IB interface installed and I suspect the HP-IB inter

I think you should check the stepper driver and motor from the paper feed. Getting an uninterrupted line for one character, could be caused be a defective stepper motor or driver. -Rik

Did you check the CLK signal on pin 11 of the keyboard controller, without it nothing will happen. -Rik Van: VintHPcom@groups.io <VintHPcom@groups.io> Namens OldHP Verzonden: zondag 8 mei 2022 16:59 A

Hi Martin, I’ve a spare 09826-66516 board lying around here. If you’re interested let me know. -Rik Van: VintHPcom@groups.io <VintHPcom@groups.io> Namens Martin Hepperle Verzonden: dinsdag 10 mei 2022

No, they don't say a lot, because you do a static measurement in a normally dynamic environment. The only thing this tells you is, there are no shorts in the supply line, not much else. When the syste

Is using a horizontal placed card edge connector a solution? You can slot in the board than. -Rik

@Ansgar, IRC Tony Duell has reverse engineered the complete 9845 with the PSU. The diagrams from the 9845A PSU are available. Tony even reverse engineered the 98780A 😉 -Rik Van: VintHPcom@groups.io <V

I have a HP 5036A microprocessor lab available. If interested please contact me off-list, the item is located in the Netherlands. -Rik

Steve, You're right the PSU is a child of Its time, the problem of today is has much critical components and subsystems which are all dependant of each other. This makes repairing a non-trivial job. -

The color monitor psu needs to be synchronised by a separate clock signal from the 9845 it can only run for about 30 sec. on its internal clock. It consists of 3 separate switching supplies to generat

1000 series psu 's are reasonable straight forward -Rik

Mine works for about 30 seconds than it blows the 80V switching transistors. They're overheating, cause unknown.. -Rik

Mwah old news ;P -Rik