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@ScutBoy I found your Dec. 2020 post on the MLA, where you reported noise coming from your headphone jack. You said it was low priority for you, so I will assume you never tried to diagnose the noise. Even so, I'd appreciate knowing if the noise you hear from your headphone jack is similar or...

I have achieved success in setting up my scope as per your direction, which you can see in my video here: You are seeing my function generator's output on the scope display. My function generator was set to a 3.23kHz SINEWAVE with DC offset. Both scope probes were connected together and to...

The final conclusion of my earlier post is: TRACKBALL REPAIR SUCCESS! The tubing I ordered from this AliExpress seller ("ID 0.8mm OD 4mm") arrived last night, which enabled me to finish the repair today: I tried all kinds of nippers and other tools, but in the end, what make the straightest...

CORRECTION: The suggestion to measure "pin 12" of UB15B and UB15C was incorrect. Pin 12 is SONY_+12. The pins I need to probe with my scope are 11, shown in yellow below.

Not sure about being tricked, but the two probes are indeed set to 10X, and the scope setting for each probe is also set to 10X. There is no mistake about that. With that said, I often use 1X when I measure very small signals. For example, if I want to measure ripple riding on the 5V output of...

@David Cook One of the reasons I make detailed videos is because I am often in need of detailed help. I try to help people the way my feeble brain needs to be helped. You are providing kind of excellent help, step-by-step. It's crystal clear. Thank you! Admittedly, I've not had the need to...

The Thunder 24/GT works well alone in a Mac IIci, or with a Daystar Turbo040 in the cache slot, or with an Apple cache card in the cache slot, or with a Radius rocket, regardless of what is in the cache slot. Note that I put the Rocket into the NuBus slot closed to the left side plastic case...

Do you have a source/link to that being a "known issue"? Also, the recent testing I am doing and reporting on is without the hard drive and without a real floppy drive attached at all. Earlier, I specified that I wasn't even using a FloppyEMU (although I don't get the pop every 10 seconds in...

@SuperSVGA I tested just now by booting from disk-1 of the System 6.0.8 floppy installation disks (via my FloppyEMU). Like you, I did not hear the pop every 10 seconds. However, when I copied the "Portable" control panel to that floppy and restarted, then I then heard the pop every 10 seconds...

Radius Rocket is now in the house. The Rocket Q&A and this page on LEM say the Rocket works only with Sound Manager 2.0, not Sound Manager 3.0. In what download can I find Sound Manager 2.0?

The speaker is mono while headphones are stereo. The speaker also attenuates noise more than headphones. For those two reasons, I cannot hear all that noise as easily through the mono speaker as I can through headphones. With that said, I can hear that pop sound every 10 seconds from the mono...

Let’s assume for the moment that it is, as you say, the “LCD driver.“ What then must I do?

Quick question... The VGA adapter product page says this: * Please only connect or disconnect this adapter when the Portable is turned off I assume the above means the following? * Please only connect or disconnect this adapter when the Portable is Shutdown or disconnected from power, not...

@Androda , thank you for your kind feedback. I appreciate the insight. The video below shows what activates the soft pop every 10 seconds — merely booting! You can also hear how the noise changes, even when you open or close a window while at the Desktop. It would be greatly appreciated...

Okay, I did a little testing on my lunch break today. By the way, the no-load (disconnected) voltage level of my fully recapped Macintosh Portable AC Adapter measures 7.568 V. I used that Adapter to power the Battery Eliminator card. Not sure what the normal output voltage of that Adapter is...

Actually, it they won't be after him because of this... No Apple logo means the EBAY sharks will continue to sell their Apple logo branded LISA mice for hundreds of crazy dollars. But even without the Apple logo, I personally think it's awesome that Stephen recreated this hard-to-find item...

Okay, friends, here are the results of my first HEADLESS test of my 5126 Portable: Everything was disconnected from the Motherboard except: (1) Keyboard (required for power-on) (2) Battery Eliminator from Androda (3) SONY PCM-D100 Audio Recorder with headphones attached. High quality audio...

I can't sing the praises of @OneGeekArmy enough. This app is truly incredible. It's the gift that keeps on giving! Folks, if you'd like to contribute to Jean-Michel and tell him in the most convincing way possible to "keep up the great work," please note he has a Ko-Fi donation page where you...