Question about ASUS MyPal A636N Pocket PC

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Replacement parts I am trying to repair my pda but have realised the circuit board that sends the signals from the buttons to the main board is broken so I am looking for someone that sells asus parts thanks martin

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Posted on Apr 06, 2008


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

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Posted on Jan 02, 2017


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Need Assistance with Vizio TV. Trying to figure out which board is defective.

If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary. Fault at its main digital board. Short circuited component/s at it.

Mar 26, 2016 | Vizio Televison & Video

6 Answers

Palm Tungsten E Power Switch Hard to Use

The switch itself, and or the bezzle of the switch is probably broken. I don't think Palm will sell the switch or the bezzle to an end user. This is a service part.

To change the switch, the unit will have to opened. The switch is on a multi-layered circuit board. Surface-mount soldering tools are required to desolder and resolder in the new switch.

For someone who is not used to doing service work on high density type circuit boards with surface mount parts, this will be a difficult task. There is a strong chance of damaging the circuit board. In that case the complete board would have to be replaced.

I suggest to call the Palm tech support and let them arrange to have the switch changed.

Jerry G.

Apr 19, 2008 | Palm Tungsten E Handheld

2 Answers

Hi. Just realised i have sound from my LG42PB tv but no picture

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.

To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Mar 22, 2016 | Televison & Video

2 Answers

Hp slate plus 4200ca plus broken screen wont power up

Probably a crack on the motherboard but if you are lucky, maybe a broken switch. Strip it down to find out.

Mar 11, 2014 | HP Computers & Internet

1 Answer

I picked up a gateway GTW-P24m303 for free from a friend. The unit powers on, but I just get the occasional flash of static, nothing more. The capacitors look good, but I don't have the equipment to...

The main tv Tuner signal board it the causes and the problems,it have ICS and some components are short in the circuits somewhere.Try website like to a whole refurbish main Tuner signal board for the replacement.This problems could be any components parts and ICS dies on the main tv Tuner signal board,best just replaced the whole board because tries to troubleshoot,u have to know alot of electronic theories and components functions to repair it.

Jun 07, 2011 | Gateway GTW-P42M303 42 in. Plasma...

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Touch screen did not work

I write this tip for Palm Pda's but it is valid for many other brands of pda's and phones.

First things to try is a normal reset and then a hard reset.

To do a normal reset, press on the reset button on your handheld.

Hard reset is performed differently on different models, check palm website for hard reset instructions: CLICK HERE FOR PALM RESET INFO PAGE

if the touchscreen doesn't work at all, and you can't align or calibrate it, or it presses on wrong spots even after calibrating many times, digitizer (which is the touch part on top of the lcd display) is most likely broken and would need to be replaced. On rare cases reattaching digitizer cable and making sure that the digitizer is clean and intact and properly on its position may solve the issue.


If you are inside warranty the repair may be completely free, contact your dealer or palm.

Outside of warranty, you have 3 options.

  1. Replace digitizer yourself, you can find a replacement from ebay.
  2. Send it to palm for out of warranty repairs, probably around 100usd.
  3. Take it to a local professional who can replace digitizer for you.
Thanks, let me know if you have any questions and good luck.
Note: In some phones the digitizer may be connected into the lcd in away that it can't be easily replaced. In these cases You will have to replace the whole screen. if the touch is non responsive after the replacement, the issue could be with the connector or then you have a faulty main board.

Jul 07, 2010 | Sony Ericsson P990i Cellular Phone

1 Answer

The lights are on, but no one's home

If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |

On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

May 04, 2009 | Philips Televison & Video

1 Answer

Fried Woofer

The problem are worsen that before. It is wisely to replace both left and right amplifier
IC, but make ensure that the power supply feed a good amount of voltage to amplifier,
Also a strong good signal. Be sure to measure it.


Jun 22, 2008 | Alesis M1-Active MkII Main / Stereo...

1 Answer

Ipaq 4155 wont turn on, dont charge, dont anything, is totally death


I had some similar experiences with these ipaq's when I was working in a specialised service center. I'll try to give some help or tips through the internet, altrough if i could have seen or diagnosticate these pda's myself it would have been more easier. First of all these problems have 2 main causes. Most of the pda's comply with one of them, it is very rare that a pda will develop this problem by having both causes.
The first cause is the hardware one. A component called the main voltage convertor is broken. It's a small chip that uses the voltage given by the main battery to convert it's value to various tensions required by some of the components on the pda's main board. If some sub-parts of this chip fails to work, the result will appear as the problem you face, In this case there isn't much to do. Most service centers will replace the whole mainboard because that particular chip is very hard to find as a replacement and difficult to desolder from the board.
The second cause could be a major firmware / ROM memory corruption. These things can happen out from nowhere. In my time working for service centers I've tried to isolate a pattern for this problem but without much succes. However it seems that most of these problem tend to appear durring charging cicles due to power spikes or drops on the main AC voltage supplied to the charger. This is only a supposition, I'm not sure yet on this cause. What to do here? Well this problems are fixable but first of all you must be sure that this is a software problem, not a hardware one. So let's diagnosticate some things.
Try to charge the pda. Ignore any lights or beeps or whatever your pda is showing on the screen. As long as the charger is connected the charging process is based on the most primary charging circuits on the pda's motherboard. If the pda is not charging or cannot hold any charge (when you unplug it the screen fades away or it simply doesn't do anything else) maybe that circuit is broken (this is a a sign of serious hardware problems ) or maybe the battery is to old/weak. Batteries don't die out of nowhere, if you remember your pda to work and have some 2-3 hours of standby time it's imposible that now, suddently the battery has drained out so much that even if charged it can't hold out at least 30 min.
So we will assume that you charged the pda for at least 2-3 hours and you see some sign that the battery is working. The next step is crucial. TRY TO PUT THE PDA IN BOOTLOADER MODE. You will achieve this by pressing (and keep them pressed!) the following buttons : power, the far left and right buttons near the control pad (joystick or whatever some people call it) and reset button. You may need another person to help you press these buttons. the order should be the following (first power, then the 2 keys, then reset button for as long as it takes to enter bootloader mode). YOU SHOULD SEE A WHITE SCREEN WITH THE HP LOGO.

If your pda fails to do that, there is nothing more you can do to restore it in a DIY fashion. Probably the bootloader is corrupted or you have a hardware fault. Only a specialised HP service center can help you now. In most cases this will end up with a motherboard replacement.
If your pda does that, then there is a chance to fix it. We will need to probe the bootloader for direct data acces. This is needed for having the ROM memory (and operating system) rewritten. A small program called Mtty will be required to access the bootloader via an usb link.

Please make this tests first and then reply with your results. If anyone of you is in situation #2 there may be a chance.

Jan 06, 2008 | HP iPAQ H4150 Pocket PC

1 Answer

Problem with charging lead(s)

You will have to send it to a service support centre to get the connector repaired.You can buy it for approx £17 or send it to the centre for is a common fault with this machine.the connector is soldered on to the printed circuit so unless you are confident in repairing it i would pay the extra and give it to someone who knows what they are doing

Jun 21, 2007 | Mitac Mio 168 Pocket PC

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