Question about Office Equipment & Supplies

1 Answer

Repair of a 1970s HP calculator: HP 27

I bought this one in college and would like to keep it working.  When using it on a fully charged battery the display (seemingly randomly) displays blinking digits (zeroes?) across the display and then goes blank.  I have purchased two replacement batteries for it, but that has not solved the problem.  Help me keep this old lady going!  Thanks.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,102 Answers

Hi the chances are the board has got damp at some point causing it to short the only chance you have of saving the calculater is to remove the case and clean any parts of the board that look coroded but even doing this might not get it working as some part could be damaged and their is no way of replacing these parts also check battery terminals are free from corosion

Posted on Mar 08, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a jet3 ultra that has never been used. In October we bought new batteries. It worked;however, we have not used it or charges it until now. The omnimeter reads 0 and only the one red light shines. ...


amy why did you not keep the batteries charged? even new batteries have to be charged before use. Now plug in the charger and look at the meter with the charger plugged in the meter will show some reading around 4-5 amps. Let the charger work overnight when you get up in the morning fully charged the meter will read zero. Turn on the chair and all the battery lights should be lit. If after charging over night you are still getting one red light then you blew 170.00 and no amount of charging will bring them back. Sorry I wish I had better news. If you replace the batteries charge fully before use and then use the chair some each day and charge nightly for 20 days this will break in the batteries and get them operating at 100%. If you then only use the chair sometimes always put it up fully charged and charge at least once a week If you use the chair for that day charge overnight and it will be ready to use again when you need it. If you are going to leave the chair unattended for 6 months then fully charge the batteries and disconect them from the chair until you need it again New batteries every 6 months can get expensive Hope this helps you

Apr 17, 2011 | Health & Beauty

1 Answer

Chair dont take a charge


Get new batteries If your batteries are 2-3 years old its time for new ones. You can check the output of the charger by using a digital voltmeter Set the meter to 200 vdc and plug it into the two outter holes of the charger port with the charger plugged in you should read 27-30 volts. and with the charger unpluged you can aslo read the voltage of your batteries. fully charged they should read 25 -27 volts. If when charging you don't read 27-30 volts then the charger isn't working and you can get an offboard charger cheaper than the onboard just charge thru the charger port on the joystick. Hope this helps

Feb 03, 2011 | Jet 3 Ultra Power Chair

1 Answer

My battery on my samsung g600 keeps going flat, when charging after a minute it displays battery fully charged. when charger is unplugged it is flat. bought new battery which just wouldnt charge. is it...


send the phone away for a warranty repair thats if its still in the 12 months warranty. sounds like the phone. since your phone is working with the charger in it, that points to the battery but if you bought a new one then it has to be the phone unless you are very unlucky in getting 2 dysfunctional batteries. But the best way around this is to send it away under warranty

Oct 21, 2009 | Samsung SGH-G600 Cellular Phone

1 Answer

Battery keeps dying


Most likely the charging circuitry has failed. When you fully charge the new battery what does the battery meter read on the camera? Your two options no matter what the case are repair vs. replacement. If you need further assistance let me know.
Thanks,
Lee

May 13, 2009 | Casio Exilim EX-S500 Digital Camera

1 Answer

Adapter not charging up computer


hi thanks for using fixya!

Have you checked your battery? perhaps, you need to change also the battery. Try to remove the battery then connect the AC adapter to your laptop using direct power without the battery. Just to see where is the error.

If still the same, I suggest that you bring your laptop to a service center to check the battery and the charger that you bought.

If you need further assistance, let me know!

Apr 26, 2009 | HP Pavilion zd8000 Notebook

1 Answer

Battery fully charged but phone dies within a minute


A friend that worked for GTE advised me some yrs ago to do this and I have NOT had a problem with another battery since
when you get any new Battery charge it plugged in to the ac AND phone jack for a minimum of 24 hrs without using it.
all batteries have some memory and deminish power over time but if it was NOT fully charged to begin with as a yr goes by so does the battery life. hope this works,

Apr 16, 2009 | Panasonic KX-TG5438 5.8 GHz Cordless Phone

1 Answer

Hp r927


Sounds like blown flash bulb.
Needs to be replaced.

Mar 19, 2009 | HP Photosmart 735 Digital Camera

1 Answer

Compaq nx 9020 battery charging problem


Damaged battery or internal circuit problem it is hard to to say. Bring your laptop to a repair shop. They can check the battery and tell you what the problem is.

Dec 04, 2008 | HP Compaq nx9020 Notebook

1 Answer

HP48SX Battery drain


Hello,


I suggest you use rechargeable batteries. They usually drain faster than the alcaline ones anyway.So have 2 sets of rechargeable batteries. Evaluate the number of days a set lasts. Insert the charged batteries before the old ones are thourougly drained.

The life of your batteries in the calculator depends on the usage.

About repairs: I am convinced that it will cost you more to have it fixed than to buy a new HP calculator (HP 49g*'s, HP 50g* 's).

Hope it helps.





Nov 13, 2008 | HP 19BII Calculator

Not finding what you are looking for?
Office Equipment & Supplies Logo

Related Topics:

88 people viewed this question

Ask a Question

Usually answered in minutes!

Top Office Equipment & Supplies Experts

kakima

Level 3 Expert

101608 Answers

k24674

Level 3 Expert

7993 Answers

yadayada
yadayada

Level 3 Expert

67930 Answers

Are you an Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...