What the heck is wrong? You need to install the graphics drivers for your videocard. Regards Howard :grinthumb. I have Everest HomeEdition installed on it Run the everest programme, and on the first screen that appears select sumary. All the important info about your system will be displayed.
Regards Howard. Everest Summary Ok I managed to find the modem driver and get it installed You need to go to the ATI website click on drivers and software , and select your Operating system I.
E Windows Thank you SO much for your help This site is just the best for help. Motherboard missing chip capacitor. Can anyone help me with a wiring diagram for an HP NC laptop motherboard please. I searched o. Re: Motherboard missing chip capacitor. Hi I have need a hannstar j mv-4 94v-0 toshiba motherboar schematic mother board:hannstar j mv Why is it so hard to find information about anything on the internet.
If someone does have it they w. Hi, I am a new member of this forum. Re: Please, service manual for monitor compaq model V57O.
Home Help Login Register. Computer Hope » Hardware » Hardware » Sync out of range. Pages: [ 1 ] Go Down. Author Topic: Sync out of range Read times. Hi, Compaq System worked properly with Win A colourful box in the middle of the screen and it just freezes there. Is this a problem with the video card driver or the monitor driver?
I would have thought XP Pro would have allowed all settings set in Win 98 to remain intact and not uninstal as I read elsewhere. Thanks for any help Adam. Q shorted again but not Q Also tested damper diode D, D, and R What is causing Q to short? I have located the culprit. There is no B-plus to the horizontal output transistor, Q I have carefully checked the board with a magnifying glass. Also check C, ultrafast D, and damper D If there are no pulses on the gate of Q, check R, zener D 18V , and ascertain that horizontal drive is being provided to Q's gate from IC P HP D monitor, when the power is turned on, the unit draws 50 watts constant, the raster pulsates about 4 times per second.
The B plus voltage holds steady at 88 volts. The High Voltage "vibrates" at If C is OK, then check the flyback. P AOC monitor spectrum 4v has power green led but has no display. Check diode near power supply, damper diode her ,stpr When I pull crt socket off the tube all is OK, so I'm guessing its excessive beam current. P Proview px monitor. I need the reference of the transistor Q Q is IRF, or an equivalent type.
IRFA can also substitute. If Q is bad, also replace C, and carefully check D for reverse leakiness. P Compaq MV monitor displays bad horizontal width problems. Can adjust vertical ok using setup adjustment controls but not horizontal width or position.
I have changed IC U and U2. Compaq MV has several chassis versions, with different CO-xxxxx model codes, but if your version has a dual diode at D, check it for bad solder, and for reverse leakiness in the diodes. It is some ST microelectronics type but cannot read because burnt badly.
The Philips part number is P Dell GDMPT monitor does not respond to the controls for vertical center and vertical size, also has pincushion on both sides. This Dell is a Sony, not a Samsung, chassis. Phillips Manufactured, but no help there. Of course Compaq recommends replacement. R, R, R burned. Need values. Looking for loose solder connections. Anything else I should be looking at? Vert IC replaced, of course. In my Philips manual for CM, R is ohm, 0. The vertical IC is TDA; also check nearby electrolytic capacitors for possible damage from incorrect supply voltages.
Initial problem was no go with ticking sound. Checked H. T which was ok. Replaced Flyback Transformer, and monitor now operates BUT only when the video cable is not plugged into the rear of the monitor. Every now and then one of these will do more damage when the fbt goes, some only the fbt. Display was split into two parts horizontally and about 3inch diagonal bar was in the center of the screen. I checked H stage. I changed H. T K is blowing. Also need value of zener diode D Another problem is when connect the Vga cable, the front panel controls does not work.
When Vga cable is disconnected the front panel controls Bright, Contrast, Size, etc work. Since Q repeatedly burns, also check if coil L has burnt or shorted windings, or has lost inductance L should retain at least 0.
P Compaq mv monitor has volts Australia in to board power supply but nothing else to the rest of the board, front led flashes dimly. But any heavy drain on the supply could cause this. P Dell P monitor, G2 dies out after 1 to 2 hours, spraying coolant on Q brings back the picture. Q is surface mounted with no visible markings, what is the generic part?
Now monitor is on but is not showing any picture signal coming from the VGA of the computer. I checked the vga with another monitor which worked fine. In the standby mode some tick tick sound coming from the relays RL and RL near the H-Out transistor and in full working mode the noise coming from the flyback or near around the flyback.
I need a substitute for a dmv or dmv Worse in high resolution modes. Check C; also check C, since the problem is worse in certain modes.
P AOC 7klr monitor. Need value of r, burnt beyond recognition. Value of R is E 1w. After replacing screen shows thin lines and foldover on top. Fixed the problem. P Kimodo K7 Sceptre monitor is dead after not being used for three months. No known damage nor surges. PLED blinks short on, long off.
P Compaq mv monitor. What is the correct line output transistor fitted to this chassis? Line output transistor is BUAX. P AppleVision Monitor was originally intermittent, when display would disappear. This seemed to be a heat-related problem, as monitor would power up normally after letting it stand for some time. Disassembled monitor, and resoldered some suspect joints. This fixed the intermittent problem. Monitor then lost display, with no obvious signs of overheated components.
Are there any points where critical DC voltages can be checked? Check vertical IC and caps. All main voltages test ok; G2 voltage is about 1kv at the source, but seems to have an automatic G2 regulation circuit at the CRT module. Check tube socket connections for dry joints. These units lift smd components on video board near the heat sink component side. Also check microprocessor output.
In the schematic, the Red input to IC is to pin 17, and is about 2. Red drive pin 18 is about 3. Red output goes to transistor Q PNP, base is about 2. Checked all resistors, transistors, diodes and caps in primary side. Replaced ic uc but did not help.
When switched ON, main capacitor still holds current. Double checked all component in primary and secondary. Unfortunately in this monitor a charged cap does not mean much. The main drive is not the IC you changed but IC via an opto coupler so if there is a short say on the flyback IC will lock down and C will be fully charged. I then suggest check the usual output transistor etc and ring the flyback if you can. P Hyundai S monitor has narrow screen.
I need the value of burned Q, I can make out K D2. Q is D After replacing the eeprom you need to do an alignment with Samsung's Softjig software and interface. After doing the alignment, save the data to the eeprom. P Compaq V75 model T monitor.
Resoldered cracked solder joints at I vertical IC , still horizontal line. R is fried, what is its? R is 1 ohm. Also check if the vertical chip is damaged. P Philips e monitor, power supply contains smps ic which is TEA I need a replacement from other manufacturers.
That is a specialized chip made by Philips so forget about other makers. P NEC P monitor with vertical field collapse. I have replaced the IC but the problem remains. No vertical deflection has a specific troubleshooting procedure.
Check vertical yoke winding connections on PCB and measure.
0コメント