Forum Rules and Etiquette

Our mission ...

This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

This forum has been around in this format for over 15 years. These rules and guidelines help us maintain a healthy and active community, and we moderate the forum to keep things on track. Please familiarize yourself with these rules and guidelines.

Rule 1: Remain civil and respectful

There are several hundred people who actively participate here. People come from all different backgrounds and will have different ways of seeing things. You will not agree with everything you read here. Back-and-forth discussions are fine but do not cross the line into rude or disrespectful behavior.

Conduct yourself as you would at any other place where people come together in person to discuss their hobby. If you wouldn't say something to somebody in person, then you probably should not be writing it here.

This should be obvious but, just in case: profanity, threats, slurs against any group (sexual, racial, gender, etc.) will not be tolerated.

Rule 2: Stay close to the original topic being discussed
  • If you are starting a new thread choose a reasonable sub-forum to start your thread. (If you choose incorrectly don't worry, we can fix that.)
  • If you are responding to a thread, stay on topic - the original poster was trying to achieve something. You can always start a new thread instead of potentially "hijacking" an existing thread.

Rule 3: Contribute something meaningful

To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
  • This is not a chat room. If you are taking less than 30 seconds to make a post then you are probably doing something wrong. A post should be on topic, clear, and contribute something meaningful to the discussion. If people read your posts and feel that their time as been wasted, they will stop reading your posts. Worse yet, they will stop visiting and we'll lose their experience and contributions.
  • Do not bump threads.
  • Do not "necro-post" unless you are following up to a specific person on a specific thread. And even then, that person may have moved on. Just start a new thread for your related topic.
  • Use the Private Message system for posts that are targeted at a specific person.

Rule 4: "PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

In short, if you are going to reply to a thread and that reply is targeted to a specific individual and not of interest to anybody else (either now or in the future) then send a private message instead.

Here are some obvious examples of when you should not reply to a thread and use the PM system instead:
  • "PM Sent!": Do not tell the rest of us that you sent a PM ... the forum software will tell the other person that they have a PM waiting.
  • "How much is shipping to ....": This is a very specific and directed question that is not of interest to anybody else.

Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Rule 5: Copyright and other legal issues

We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.

Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.

Reporting problematic posts

If you see spam, a wildly off-topic post, or something abusive or illegal please report the thread by clicking on the "Report Post" icon. (It looks like an exclamation point in a triangle and it is available under every post.) This send a notification to all of the moderators, so somebody will see it and deal with it.

If you are unsure you may consider sending a private message to a moderator instead.

New user moderation

New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.

New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.

Other suggestions
  • Use Google, books, or other definitive sources. There is a lot of information out there.
  • Don't make people guess at what you are trying to say; we are not mind readers. Be clear and concise.
  • Spelling and grammar are not rated, but they do make a post easier to read.
See more
See less

NEC Mobilepro 750c

  • Filter
  • Time
  • Show
Clear All
new posts

    NEC Mobilepro 750c

    Anyone familiar with this palmtop? It is based on windows ce and just will not power up. Batteries seem to be charging and even when on AC it still will not turn on. Any help would be appreciated.

    Here are some basic and slightly obvious suggestions. Make sure you are using the correct power supply? There should be a a reset button on the bottom toward the rear of the unit. Check to see if the display brightness is turned down completely. Remove the battery and try with just the power supply connected. I have seen some comments from other 750c owners about failed caps causing power on problems.
    Last edited by BuggZ; April 17, 2013, 12:19 PM.


      The thing about resetting is that it needs to be on to do a reset!? A catch 22 if you will. I tried to turn on and press Alt-F12 to increase brightness but nothing there.
      I have tried without a battery and still nothing. The Power supply I received with it was a 15 volt. Specs call for a 9 volt. So I am trying it with a 9 volt and of course also no good. I don't think the 15 volt did any damage though. Or I hope not. A question thought do these things beep at startup? Or make any kind of sound. If so it is dead silent.


        Connecting a 15v power supply would most likely cause damage if the unit required 9 volts. The oldest NEC I have anymore is a 900C but I also have a Sharp HC 4500 Color which is similar to the 750C. Both of mine will chime once Win CE starts to load. If I don't use the Sharp for a while I have to plug it in and let the battery charge for about 5 minutes before it will turn on.


          Just checked the NEC support website and it says a hard reset must be performed if the main battery and the backup battery have both been completely discharged. Before a hard reset can be done the battery must be allowed to charge for 10 hours. If you don't already have it you can download the user guide from the NEC 750c support page.


            The 15v PS was what it came with. I was probing around the motherboard and I see voltages everywhere. Mainly looking at CAPS right now. Not to hard to take apart. And yes I have the manual already. Came with the unit. Still probing around right now.


              It died a quiet death! No charge light now.


                The genie escape?
                Looking to acquire: IBM 5100, Altair 8800


                  Something went poof! But I am not gonna waste my time trying to track it down. Got my money back anyway.