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MONITOR FLICKERS WHEN IT COMES ON ANDSOMETIMES IT DOESNOT COMEON.

THERE IS 55VDC ON SOME POINTS ON T-802 RECTIERS HAVE
5VDC 5VDC 24VDC I GET 5.8VAC ON HIGH VOLYAGE HOPE YOU CAN HELPME . THANKS GENE

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  • genesgiel_20 Nov 20, 2008

    DO I HAVE TO PAY FOR HIS

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Yes

Posted on Nov 20, 2008

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Can l use a garmin sat nav on 24volt


Garmin GPS products operate on +5VDC and require an adapter to convert +12VDC to +5VDC. The internal battery is 3.7VDC and is charged by the +5VDC.

If you want to use +24VDC, you will need to find an adapter that converts +24VDC to +5VDC @ 1AMP and has the right connector to mate with the unit. Connecting +24VDC directly to the unit will damage the GPS.

Some motorcyclists connect the GPS directly to the +12VDC battery and damage the GPS.

Jun 03, 2016 | Garmin GPS

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We have samsung LCD with 40r81b main board.The VGA cable was connected to Latop and due to short from laptop the VGA port and its surrounding diodes are blown.i have removed the shorted diode.but TV is not...


So the standby 5vdc is working but not the rest of the power supply outputs are working? Look for PS_ON signal (3.3~5vdc for ON) from the main board that feed the power supply board. You can tak ethe power supply moudule out the do bench test using 24v lamp attach to the 24vdc out put and feed the PS_ON with 3.3v to see if the 24vdc will turn on.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: http://interliquidparts.com/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
I have a feeling that the main board is damaged since the protection Diodes are blown, it may have taken out the processor.

Jul 01, 2011 | Samsung LN-S4051D 40 in. LCD Television

1 Answer

Samsung ln32c450. Previously: Turning itself off/on, a.k.a "power cycling". Now: tries to come on but only a brief momentary white flash on the screen, then nothing. Remote detector circuit...


Are you getting backlights but black screen? You need to find out if you are getting PSON (on signal (3.3~5vdc) from main board to turn on the 24vdc power supply for the inverter board), you also need to find out if the inverter board is also getting the BLON (backlight on, 3.3~5vdc) signal from the main board, this signal and Dim signal may be routed through the power supply board).
Please read my guide to understand how it works.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.

Mar 12, 2011 | Samsung LN32C450 32 in TV

1 Answer

Green light comes on but no picture nor sound


Right now the 5vdc standby power supply is working but not the 12vdc (for sound) and the 24vdc (for the backlights). This can be due to bad 12v/24vdc power supply sections due to bad caps with leakung/bulging tops or failed circuits, or it is not getting the PSON command from the main board, or the backlights inverter board is shorted out so it causes the 12/24vdc to stay in shutdown mode (you will have to disconnect the cabels to the inverter board to see if the 12/24vdc will come back on, you will get sound but no pictures).
Please read my guide to get more understanding about LCD TV.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.

Dec 31, 2010 | LG 26LC2D 26 in. LCD Television

1 Answer

Hello i have a vizio 42" lcd tv... i have read on here and it seams you had the same problem i was just curious if you got urs fixed. i have 5vdc coming out of my board as well but no 12vdc or 24vdc....


The 5vdc standby is workingbut the 12 and 24vdc power supply are noty running, it can be due to not getting the turn on command from the main board, or the fault is in the power supply itself, or it sensing shorted circuits in the backlights inverter board so it will not come on.
So look for PSON signal (3.3~5vdc = ON), or disconnec the cable to the backlights inverter board to see if the 12/24vdc will come back on.
You did not provide the model number so I cannot look up the power supply information.

Please read my guide again;
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.

Dec 30, 2010 | Televison & Video

1 Answer

I have the Logitech Driving Force wheel with pedals and mine says on the bottom of the wheel, M/N E-UC2 5Vdc--.100ma and 24Vdc--.750ma. There is no USB before the 5Vdc. So which voltage is right? ...


There should be a USB dongle which plugs into the USB port. This would be the 5V @ 100ma. The wheel itself has to be connected to the mains by a power supply which should have come with it. The power supply provides the 24V @ 750ma. The wheel communicates with the PS3 through the USB dongle.

Sep 30, 2010 | Logitech DRIVING FORCE FEEDBACK STEERING...

1 Answer

Same issue. 5VDC & 15VDC OK even when CCFL's go off. New 1,000uf/16VDC cap. Just prior to going out screen starts to flicker slightly. Can't see any bad solder joints on the power board. Any hints?


The 1000uf/16vdc caps are for the 5vdc logic, there should be at least tow caps rated at 25vdc for the 15vdc inverter circuits. Try using 1157 12v car lamp attache to the 15vdc, the power switch will have to be off (the 5vdc and 15vdc are always on) so the inverter circuits will not be drawing the current from the 15vdc power supply, the 15vdc should be at 15vdc +/-1~2v with the lamp load. If it is steady, then you still have problem in the inverter circuits which can be the lamp assemblies, inverter transformers, Transistors/IC. I use test lamps set up to narrow down the problem to find out if it ia the lamps or the inverter circuits.
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

Service manual: http://elektrotanya.com/?q=showresult&megnev=Sony%20&megnev2=SDM-HS74P&kategoria=&kat2=all

Sep 10, 2010 | Sony SDM-HS74P/S 17" LCD Monitor

1 Answer

T.v. light comes on when I hit the ON button, but there is no sound or no picture.


The standby 5vdc is working but the rest of the power supply sections (5vdc main, 12vdc (for sound), 24vdc (for backlight inverter board) are not on. The first place to look will be the power supply module, Check for those voltages. Look for blown parts,bad caps with leaking/bulging tops.
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Parts are alittle hard to come by:
http://www.shopjimmy.com/catalogsearch/result/?q=Proscan+32LA30Q+

Check EBAY also.

Jun 14, 2010 | Proscan 32LA30Q Television

1 Answer

I have a 26" monitor. Input is 24vdc 5amp. The picture keeps on flickering. Is this a power issue?


maybe yes maybe not... try your monitor to another system unit... maybe the video card.. after that if no improvement.. call your dealer

Nov 28, 2009 | Computers & Internet

1 Answer

Printer fault (phaser 7700)


Here is the Diagnostics.

04-361 DRUM MOTOR DRIVE FAIL
EXPLANATION
Poor Drum Motor rotation.
Refer to BSD: CH9.1 CH9.1
Procedure
Remove the Drum ASSY (Y/M/C/K), execute DC330 [004-003].
Does the Drum Motor rotate?
Yes No
Between Drum Motor J210-4 (+) GND (-)
Is the voltage +5VDC?
Yes No
Using the wire network from Chapter 7, check the +5VDC circuits up to Drum Motor J210-4. (WN7.3.6 +5VDC-2)
Between Drum Motor J210-6 (+)GND (-)
Is the voltage +24VDC?
Yes No
Using the wire network from Chapter 7, check the +24VDC circuits up to Drum Motor J210-6. (WN7.3.13
+24VDC-3)
Execute DC330 [004-003].
Between Drum Motor J210-1 (+)GND (-)
Is the voltage 0 VDC?
Yes No
Execute DC330 [004-003].
Between MCU PWB J407-B1 (+) GND (-)
Is the voltage 0 VDC?
Yes No
Check for broken wires or bad connections from Drum Motor J210-1 to MCU PWB J407-B1, and if there
are no problems, change the MCU PWB. (PL5.4).
Check for broken wires or bad connections from Drum Motor J210-1 to MCU PWB J407-Bq
Execute DC330 [004-003].
Between Drum Motor J210-2 (+) GND (-)
Is the frequency between 1KHz and 1.3KHz?
Yes No
Execute DC330 [004-003].
MCU PWB J407-B3 (+) GND (-)
Change Drum Motor. (PL1.1).

Dec 27, 2007 | Xerox Phaser 7700 Laser Printer

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