Question about Raymarine RAYTHEON S2G Notebook

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I have a type 100 12 course computer that has a low battery alarm as soon as the ''auto'' button is pressed I found the rectifier diode ''D19'' was bad I replaced it and the computer worked for 1 day then the low battery alarm returned. I have read that there was a fix for this from Raytheon the part # is 440127 is this still avalible? if not can you send me some imformation or a circuit diagram of this fix maybe i can repair this one again with the new mod and not have to spend 3,000 for a new system. if you can help thanks alot.

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Contact Frank Zabroski SR of Audio-Tronics he may be able to help you get everything you need

Audio=Tronics
8566670616

Thanks, Frank
@Tech
http://www.attechcomputers.co.cc
3868607368

Posted on Jun 19, 2009

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Every time I press the talk button the radios show low battery icon and I'm not able to transmit on either radio. How can I rectify this problem?


Hi,

Are you SURE that your batteries are up to snuff? I.E. when they have a light current load on them they are ok but as soon as you try to increase that current load they die off quickly. With two-way radios, the actual current drain depends on whether you are transmitting or in standby (receive) mode. Transmitting requires significantly more current than standby mode. So, I would look at what kind of batteries you are using. If they are a good name brand alkaline, check to see if they measure close to 1.5 volts with a voltmeter or check them with a battery tester to ensure they are good. If they are ni-cad or ni-mh rechargeable batteries, make sure they are rated at least 1200 mah (milliamp hour). I use Sanyo eneloop rechargeable batteries. They last a long time for me. One other thing, make sure your battery compartment is clean and there is no corrosion on the contacts the batteries are placed into.

Hope this helps,
Jim

Sep 08, 2014 | Uniden Radio Communications

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Shorted Rectifier Diode (fuse keeps blowing)


jdvillanueva_14.jpg
This CRT tv is dead set, no reaction when the power button is pressed(no standby led light). I've open the back panel and check the faulty parts.
jdvillanueva_15.jpg

As you can see the fuse was badly burnt-out indication of excessive current due to short circuit.
jdvillanueva_17.jpg

I've checked the parts feeding the AC line to the power supply board (Power cord, VDR, Ceramic capacitor, Coil, Posistor, Degaussing coil) one by one and I've found out that one of the four rectifier diode has a leak which caused the glass fuse burnt-out.
Here's how to test the rectifier diode.

Good Diode
Note : Forward and reverse bias depend on what type of ohmmeter are you using, here I'm using a Japan Standard(Sanwa Brand).
jdvillanueva_21.jpg

Using an ohmmeter set it to X10 to see much easier the leak from the diode in reverse bias.

Forward Bias : test the diode by connecting the red test prod of the tester to anode and then the black test prod to cathode of diode. You will see the pointer will reads a faily low resistance(above picture).
jdvillanueva_22.jpg

Reverse Bias : test the diode by connecting the red test prod of the tester to cathode and then the black test prod to anode of diode. You will see at the picture(above) that the pointer didn't react (remains in infinity). This is a good diode.


Bad(leaky) Diode
jdvillanueva_23.jpg

Forward Bias will reads fairly low resistance.
jdvillanueva_24.jpg

Reverse bias unlike the good diode the pointer will also reads a fairly low resistance.

After confirming that the diode caused the fuse from blowing I've decided to replaced all four diodes since I have a lots in my stocks.
jdvillanueva_25.jpg

Remember that when you installing the new diode on the board, make sure that you will make it in the right polarity.

jdvillanueva_26.jpg

This steps is also applicable in the DVD Player,Flat panel, Projection, LCD TV, you have to disregard only the posistor and degaussing coil.

Have a nice day!
Thanks for using Fixya.

Jdvillanueva

on Mar 02, 2011 | Televison & Video

4 Answers

How do you test a diod in the circuit


First of all it is called a diode and it is an active component. The way you test it is , first remove power from the circuit, then using a ohm meter on the high power ohms or diode test function. It should read high resistance in one direction and low resistance in the other direction you also can use a battery and light bulb in series connected to the diode. The light should light in one direction and not the other. If the diode is across a coil or low resistance device it may not be able to be tested accurately in circuit, in this case one end will need to be lifted from the circuit to test.

Aug 07, 2014 | Electronics - Others

1 Answer

How to stop dicon smoke alarm beeping


All smoke alarms beep if the battery is too low. Getting a used battery isn't good enough for smoke alarms. Even getting a new battery from a dollar store (a cheap no name brand import store) will not do... it has to be the newest and it has to be alkaline. once you put it in... press the button for 10 seconds... first you will hear it's own alarm then you will hear the others attached to it in the whole system chime in (if you have that type) the alarm will now sit quietly.

Oct 20, 2013 | Home Security

1 Answer

Computer box


You supplied proprietary part identifiers for your unknown brand computer monitor. Without more specific details there is not much we can do to help

Jun 11, 2013 | Computers & Internet

2 Answers

How to identify a defective rectifier diode


You can check a rectifier diode using a multimeter - Set the meter to the lowest ohm range and place the probes at each end of the diode. Take a reading then reverse the probes at the ends of the diode and take a reading again.
A good diode will show a low reading when the diode conducts and a high reading when it does not conduct when the probes are swapped around.
A bad diode will show a low reading (short circuit) when it the measurements are taken both ways.
A bad diode will show a high reading (open circuit) when it the measurements are taken both ways.

This is may not be accurate if the diodes are still soldered to the circuit board, you may need to unsolder one leg of the diode free of the circuit board and then carry out the measurements to get a true reading on the diodes.

Mar 23, 2011 | Computers & Internet

3 Answers

Battery has been charging to 100%. Suddenly would only charge to 76 percent. Now, after two weeks, will max at 62 percent. Computer is 1 year old. Can battery meter be recalibrated?


Pulled from Gateway's website:
Do not interrupt the battery recalibration process. If recalibration is interrupted, you must start the process over again.

  1. Close all open files and programs.
  2. Connect your notebook to AC power and allow the battery to completely charge.
  3. Disconnect the AC power and restart your notebook.Note: If the power cord plug.gif or battery baticon.gif icon does not appear on the taskbar, click the show hidden icons showhidden.gif button. If the icon still does not appear, verify thatAlways show icon on the taskbar is checked on the Power Options Properties Advanced tab.

  4. Completely discharge the battery by doing the following:

    1. From the desktop, right-click on the power icon, then select Adjust Power Properties.
    2. Click the Power Schemes tab.
    3. Click the arrow button to open the Power Schemes list, then click Always On.
    4. Click the Alarms tab.
    5. Click to remove the check mark from the Low battery alarm and Critical battery alarm checkboxes. Let the battery drain until your notebook automatically turns off.

  5. After the battery is completely drained, reconnect your notebook to AC power.
  6. Charge the battery completely until the yellow battery status indicator goes out.
  7. When you are ready to use your notebook again, do the following:

    1. From the desktop, right-click on the power icon, then select Adjust Power Properties.
    2. Click the Power Schemes tab.
    3. Click the arrow button to open the Power Schemes list, then click Always On.
    4. Click the Alarms tab.
    5. Click to select the Low battery alarm and Critical battery alarm check boxes.

Mar 11, 2011 | Gateway Netbook N450

1 Answer

My 95 CB1000 is not charging,I found small amount of melting at the conector to the rectifier.How do I check to know if it's the stator,Rectifier,altinator?? Thanks Rene


A bridge rectifier is in your circuit to make "rectified DC" from the "AC" your alternator produces. Of course you need DC to charge the battery.

Simple method - no ohm meter required.

Get a flashlight battery, a flash light light and two paper clips. Fasten one around the light and tape it to the + end of the battery with the tip of the light on the tip of the battery. You will have to manipulate #2 paper clip onto the bottom of the battery as you insert it here and there. Hold the thought.

A bridge rectifier is composed of two or four or maybe more diodes. A Diode allows power to travel in one direction but not the other. When this happens, the "top" part of the AC cycle passes through the diode but the "bottom" part does not. (remember what AC looks like on an oscelescope? - I cant remember how to spell it)

What does that mean to you? ... with the battery out of the circuit and the rectifier unplugged, start sticking the paper clip into first one then another slot. If you get light at all terminals, (or any pair) your diodes are shorted. Same story if you get NO light at all terminals (or any pair).

If your rectifier is good ... you should get light in one direction (some terminals) then turn the polarity around on the same terminals and you chould get no light.

If you have a ohm meter, you should read open in one direction and short in the other direction.

If this is getting too deep for you ... let me know I will try again.

If your rectifier is bad, remove it and take it with you to the Honda Shop parts place to make sure you get a exact replacement ... while there, ask the counterman if he or she can check it for you.

I hope this helps you out.

If you are pleased, remember we work here for "bragging rights" only. Please leave positive comments.

Thanks

a




Oct 13, 2009 | 1995 Honda CB 1000 Big 1

1 Answer

I installed a new quality battery,charged it. Dies in one day


It could be either your stator or your rectifier.You should check your AC output from your stator before replacing your rectifier. The rectifier is found bolted to the front side of the battery case.
Here is a link to a diagram to illustrate the location. The rectifier is #24.
http://216.37.204.203/Yamaha_OEM/YamahaMC.asp?Type=13&A=328&B=49

Sep 25, 2009 | 2001 Yamaha YZF-R6

1 Answer

Unable to set the alarm


To Set the alarm time: Press and hold the ALARM button down, and then press the hour/minute buttons to obtain desired time (Note the PM indicator on the screen for PM times)

To Enable the alarm: Move the sliding switch to AUTO or ALARM (Auto is for radio wake and Alarm is for beeping noise) *remember to turn up the volume knob if using AUTO (radio) setting.

Dec 04, 2008 | Lenoxx Electronics Clock Radio With CD...

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