Question about Protron PLTV3250 32 in. LCD Television

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FSP194-3F01 NOPOWER 5V OK NO 16V OR 24V - Protron PLTV3250 32 in. LCD Television

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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.

Posted on Aug 28, 2010

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Need a replacement power supply for a Evernote scanner


Sorry Gregory, gave you the wrong number.
You could try something like this. Various voltages and currents with different adapter plugs. This is on Ebay UK but I would think there are others, don't know where you are.
Ebay item number: 201154296095

Specs:
1.Rated Input Voltage: AC 110V or AC240V
2.Vibration Input Voltage Range: AC95V-265V
3.Input Rated Current: 0.4-0.6AMP
4.Input Power: 90W
5.Efficiency: >88%(TYP)
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8.Output voltage: 15V/16V/18V/19V/20V/22V/24V(-0.4/0.5V@rating load): DC15V-24V
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10.Overload protection: YES
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If the plug (male) is smaller than the socket (Female) then it's probably the wrong model. You mentioned replacing the cord - be aware that in those low voltage power connectors there are a whole bunch of sizes. - you may have picked up one that is marginally different (hence the looseness) - electronic stores (Radio shack etc) usually carry switchable supplies (You need to know whether original is 3V, 5V, 6V etc...), and size of connector, and polarity (Whether it's positive on the centre or the outside. ) ALternatively, ring 1-800-722-9125 (ATT phone customer service). IF you look at something like
Amazon com Universal AC Adapter 15V 16V 18V 18 5V 19V 19 5V 20V 22V 24V... on amazon you will see what I mean by the diversity of connectors. Unless you have the original for comparision, it might be a crapshoot (i.e. wrong connector could "smoke" the phone - ATT customer may be best option.

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Hello,
I suggest that you use the ac adapter intended for the model of your computer to avoid from getting any problems.
David

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tried first to disconnect the supply connector going to the inverter board for back light just to ensure if their is no shorted component here. and then turn the power on again if the light stay then the inverter board was the cause why won't power on. by the way did you make a voltage checking at the power supply board does it have correct output voltages 5v,12-16v and the 24v.

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1 Answer

Power but no picture


you need to check weather the power supply has complete output dc voltages 5v stand by, 5v detect 12v-16v for audio and tuner and 24v for back light. if just only an stand by voltage, the cause is either the power supply failed or the main board detect an error in the inverter board .

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Fuse and power supply look ok to the eye slight static sound on audio tiny flash intermitent inright corner on video, any clues? power diods check good ,nothing looks hot or burnt There is a second board...


Your power supply on the dc output should have the floowing DC voltages, 5v, 12v, and 24v. Just start probing the connectors of the power supply. 24v is needed for the backlights inverter board, 12v for sounds, 5v for logic board.

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Panasonic TX-29ps stdby LED only 2 seconds after switching to the network, everything else is dead. However, Switching PSU IC801 provides voltage to 5V for stdby.


check : H-output tangester / EHT output voltage line 12v /24v 180v check dyiod /capaciter / ragistance ..
if your tv set red led is cantinu on then standby tr.checked if ok then
cheked 5v ragulater ic or prosasor cristl and with canecting pf


1.open s.by tr. check pin voltage
if ok
then check EHT output section h-driver transfermor h-puls 2.1v ac
if not then check croma ic input voltage B+ is 8 v dc and canacting spaer.


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Tv wont turn on (wont stay turned on)


pls. check power coad is likage or luse canaction in plugh
if ok then problum is inside of tv so pls. cheked in pcb.....
1st : SMPS output voltage and 5v /12v/ 24v /135v dc filter capaciter cheked and replace 470/16v /1000/35v / 220/450v if any capaciter likage or sort * first cheked dyode.
2nd : EHT output line capasiter or dyode checked 4.7/250v /100/160v
and line coil or 1ohm register cheked
3rd : DT (driver transfermor ) and with cancting spear dry.
note: pls descanect tv with DVR and cheked tv set is turn on atlist 10min. minimum with any ather product (DVD , GAME BOX ,CABEL CANACTION) if is ok. then problum in DVB setup box .

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