Question about AcerView 78ie 17" CRT Monitor

5 Answers

MONITOR REPAIR HELP

Hi I would like to appreciate for your help I have got an Acer monitor model G781 CRT Type its switching power supply is not starting 300 volt supply is ok , Q602 (2SK1940 )& ic 601 (UC3842)have been changed with new one, switch transformer is ok .but it does not start . still I have no schematic diagram to trace & trouble shoot . any kind of help will be usefull .

Posted by on

  • 3 more comments 
  • ALI HEYDARI
    ALI HEYDARI Jun 26, 2006

    Checked output circuitry for short , there was no short .
    As the primary & secondary circuit were checked for active components & suspecxted passive components,this time cheked the passive components very precisely & find out the R627 a 10K ohm resistor , in one end is 10k & the other end is infinity !
    So replaced R627 , & the system is started .

  • Anonymous Jan 04, 2008

    circuit

  • Anonymous Sep 06, 2008

    HANNS G HU196D DRIVER <<<<

  • Anonymous Mar 21, 2014

    power supply failure str burned i cant identyfiy str number

  • Anonymous Mar 21, 2014

    power supply

×

Ad

5 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a samsung make 29" monitor and at start up its normal but after few minints the picture is starts flickering and increase gradually and after almost 15min all screen goes spraded that even cant c the pic, please help for the same

Posted on Sep 15, 2008

Ad

MONITER DELL 17 D1028LR R3550

Posted on Jul 10, 2008

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I bought lg 17"monitor on last year but now i am having problem my monitor does not getting the power to strart

Posted on Apr 11, 2008

Replace the main board to solve problem

Posted on Jan 31, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 513 Answers

The mains switch is a weak link on these, check this first. Also 1 of 2 33K 2W startup resistors in PSU goes o/c, check with DVM or if you have very high volts on main primary res cap this usually indicates a 33K has gone - change both. I've also had a small TO92 transistor hanging off the UC3842 failing causing no startup. A s/c HOT normally causes a blinking LED. note that AC cap IS charged, DISCHARGE BEFORE WORKING ON IT! Did you check for shorts in the secondary side of the p/s, horiz output? If there are none , look for the switching regulator. Check the support components. I've seen these with open solder connections on the coils in the PS due to that abominable glue they use...you'll see signs of burning/arcing on the inside of the cabinet, too. Good luck

Posted on Apr 11, 2006

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

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

Do you have Schematic for my monitor


Hi
Dont think they are available any more. It's becoming a throw away world.
I used to fix them.... without a schematic. Your local TV technician can often assist with repairing an older style monitor. e.g. CRT tube type.
Modern monitors are LCD & digital electronics. Although they still blow fuses & have switch mode power supplies with leaky electrolytic capacitors that stop the power supply from working.
If your knowledgable in this field then I would start with a visual of the power supply. Be careful of the shock hazards.

Good Luck
Trevor

Sep 06, 2014 | Dell UltraSharp 2405FPW 24" Flat Panel LCD...

1 Answer

I have ac Acer S202HL LCd monitor. When I booted up one day it didnt come on.


first check with your both power supply out put is coming 19 Volts dc.
if its not coming check with multi meter primary and secondary of your adopter continuity.if no continuity replace with proper working adopter.

Nov 07, 2013 | Acer S202HL LCD Monitor

1 Answer

Acer AL1711 17" LCD Monitor showing white screen


Hello,

A white screen indicates the power supply board is not putting out the correct voltages to properly power the monitor, just the back light. This type of issue is caused by a failure of the filter capacitors on the power board. You can rebuild your power supply board and bring the monitor back to life by just replacing the the bad capacitors. The problem is that model the Acer AL1711 could come with 1 of 4 different power supply boards install depending and the date manufacturer and supply on hand. If you want to repair the monitor if you could open the unit and get either the model number of the power supply board or send a picture of the board to me I will be glad to help you repair the unit and get it back up and running. You can contact me to send the information at tech@ccl-la.com

Nov 30, 2012 | Acer AL1711 17" LCD Monitor

1 Answer

Samsung 793S (Black) 17


On these older CRT monitors when you have that type of problem it indicated that the high voltage power supply is not putting out the right voltage to charge the picture tube. As the power supply gets weaker the time to show a picture will take longer and longer. It is not worth repairing the unit because parts will run much more than a replacement monitor.

Jul 19, 2012 | Samsung 793S 17" CRT Monitor

1 Answer

Acer monitor wont turn on or off?


Hello,

This type of problem is usually caused by a failure in the power supply board. Here is a link to a repair guide that shows how to dis-assemble and repair the power supply board. If you can do a little soldering then you can repair the monitor.
http://www.ccl-la.com/blog/index.php/repairing-the-acer-al2016w-monitor/
I hope this helps, if so please rate my solution.

BuddyMc

Nov 29, 2011 | Acer AL2016W 20" LCD Monitor

4 Answers

Hi I have an Acer AL1916 that is not powering up, there is no light on the switch, is there anything I can do, like fuses to check etc? Regards Alan


Sorry no fuses that can be changed. Often it is just the power supply going on the fritz, take it in for repair, due to the cost of monitors repairs are usually very reasonable, as long as you find, a place that specializes in Monitor repair, it will be OK. Anyway you can always ask for a "Quote" and decide as to repair or replace,

Apr 05, 2010 | Acer AL1916W 19" LCD Monitor

2 Answers

Monitor not working


If this is LCD monitor, The power supply of you LCD need to be repair.Ask technician to fixed this power. LCD monitor need to epen and replace defective parts

Jul 26, 2009 | Computers & Internet

1 Answer

How to repair


MY SUGGESTION IS TO BUY A REPLACEMENT MONITOR AN LCD BECAUSE IT USES LESS energy about 50% less and at a low voltage.

YOU PROBABLY CAN FIND ANOTHER RELAY AND CAPACITOR ONLINE OR AT A TV REPAIR SHOP electronics supply warehouse BUT IF THESE COMPONENTS WENT BAD
OTHER COPONENTS MAY BE BAD ALSO AS A RESULT OF THESE HAVING FAILED SOMTIMES RESISTORS,DIODES AND TRASISITORS LOOK GOOD VISUALLY BUT ARE NOT.

Save your self sometime and money by getting a new lcd monitor

even if you repair your monitor its still old if you replace this mointor with a new one you elimiate all risk because a new monitor will have all new parts and a warranty and save money on your electric bill because it takes less power to operate.

Jan 16, 2008 | Acer AC711B 17" CRT Monitor

1 Answer

Switching power supply


I have for you brand new please contact arghno2000@yahho.com

Aug 30, 2007 | AcerView 78ie 17" CRT Monitor

1 Answer

Help on monitor repair


Have you checked the horizontal output transistor for a short or leakage?? most of these sets will not start up unless the horizontal sweep sends the pulse to the power supply and says start me up!! I would look at bthe drive as well on the horiz. curcuit. If theres a pulsating voltage that means its waiting for something to signal it to work or its missing something.. Good luck

Apr 17, 2006 | AcerView 78ie 17" CRT Monitor

Not finding what you are looking for?
AcerView 78ie 17" CRT Monitor Logo

1,801 people viewed this question

Ask a Question

Usually answered in minutes!

Top Acer Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18425 Answers

Mohammed Ebrahim M
Mohammed Ebrahim M

Level 3 Expert

645 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you an Acer Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...