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This printer does not start not even the display is on.I checked power supply for 16v and 32 volts ,both ok.!6 v is present on the control panel board. Is the the mother board which is faulty?

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No there is a fuse inside check that it hasent popt

Posted on Apr 04, 2011

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Why my hp designjet 500 smps has high voltage than normal


check power supply and if voltage are good change Electronic module its damaged. this voltage what you are write not normal!

May 21, 2015 | HP DESIGNJET 500 InkJet Plotter Printer

1 Answer

Printer is not turning on


Hi dear friend , seems your problem is depend to dc controler board which makes hi and low voltages and sends them to other sections like drive motor-display - laser unit - fusing section and other parts in the mashine . If you are a technision so you know well what can you do , if not , just follow power cord and check if there is in put AC voltage ( 220 or 110 volts)on the power supply board ? If you saw the voltage on the diode bridge go a little further on the maun capacitor and check about 300 dc volts on it . If there is not ac and dc volts , you should remove main connection from power supply to dc board then check the voltages that mentioned . Remember that , this is step by step diagnostic finding issue and all of my prefers to you was depend to this point that be careful and if there is nothing voltage even on the panel lights . Good luck

Nov 24, 2014 | Canon I-Sensys Lbp5050 Laser Printer

1 Answer

NO POWER, ONLY 6 MONTHS OLD, HAD POWER OUTAGE A WEEK AGO- EVER SINCE THEN TV WILL NOT TURN ON.


if you suspect lightning or a power surge that caused the problem, if it were lightning could have effected the power supply board, or if it was lightning it could have went in on the cable or antenna connection. to narrow down the problem, check the fuse on the power supply board, if that is ok then with a volt meter check and see if there is 5V volts going to the signal board, that is the board with the antenna connection, one of the plugs that go to the board probably has writing next to the wires in the plug, if no 5V probably the power supply board bad, I almost forgot, when you take the back off look for burnt parts. if you have the 5V going to the signal board now the problem could be signal board or power supply.

Jul 07, 2014 | Vizio L32 32 in. LCD HDTV

1 Answer

Sylvania HDTV Model LC370SS8 won't turn on.


u should check std-by volt .when u press power on , the power on volt must not b drop

Oct 09, 2012 | Sylvania LC320SS8 32 in. LCD Television

1 Answer

FSP194-3F01 NOPOWER 5V OK NO 16V OR 24V


The 5 volts is the standby voltage that should always be present, the other voltages should be there when you try to turn the LCD ON.
If the 5 volts standby are not steady when connected to the main board, Q7 might be defective.
Check all the capacitors in the secondary circuitry for bulging or leaking conditions.

Aug 28, 2010 | Protron PLTV3250 32 in. LCD Television

2 Answers

My akai tv wont turn on


check all caps 1000mf-16v & 470mf-16v before buy a new one. maybe the board have blows caps.

Jun 18, 2010 | Akai LCT3285TA 32 in. LCD Television

1 Answer

AKAI 32" Power Malfunction


check all 1000mf-16v & 470mf-16v in power supply. may be blow.

May 06, 2010 | Akai LCT2662 Television

1 Answer

Have TDS320 SCOPE that powers on ok , but no panel control func.


Are any knobs in manual position? Rotate all knobs full clockwise / counter-clockwise and lock in place.

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2 Answers

Our 50" Philips Plasma wide has a red light that flashes also.


normally that sounds like a power supply failure

even if the caps look ok check the secondary side of supply rails for ripple or voltage outside of specs.

this is a common problem on these units the caps are (as far as i can remember) are 3300 10v , 100 16v , 1000 35v 330 16v

the other problems i have had with these sets is the resistors that drive the relays going high in value.

Sep 07, 2009 | Philips 42PF7421D 32 in. LCD HDTV

2 Answers

Screen goes black when power cord is plugged in.


Start by checking the power supply with an ohm meter for the proper output. Anything higher or low than one volt means the supply is faulty and will need replaced. This could also be a battery issue, if a fail safe in the battery has engaged. Try removing the battery and see if it works properly on the supply only, if so, then the battery will need replaced. If these two check good, then I'm afraid the problem is with the power management system on the motherboard, and unfortunately the motherboard Will have to be replaced.

Aug 20, 2008 | Dell Inspiron E1505 Notebook

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