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I have a analog percision power supply. I put all new parts in it new fuse holder plug switch. I dont know how to connect them. Can u show me in lamens terms.

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You really shouldn't mess about with power supplies if you don't know how to do them. It would be wrong for a Fixya member to explain it to you as even with the best advice going, you could electrocute yourself, or start a fire. We can't even be certain you have bought the correct safety parts. I suggest you take the device to a trained person - with the parts - and let them fix it for you. Before you do yourself an injury or kill yourself.

Posted on Apr 28, 2015

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Ii replaced all the parts in my percision analog power supply i dont know how tp reconect tbe wires can someone help me


I'm not sure what that is but I would probably go online to find the answer you will probably have to take it to a place where they know about these things or just DIY (do it yourself)online.

Apr 28, 2015 | Power Computers & Internet

1 Answer

My polaroid FLM-373B shows no standby and wont power on


if no stand by indicator the first indication is power supply board failure. now the first place to be check is the fuse if blown?. if yes, before you replaced with new one re check other component parts in the power supply board which the cause of blown. you need a digital or analog tester so you can perform the job. then making sure you have at least a basic knowledge in any electronic repair, for safety purposes. hope this can help good luck.

Aug 13, 2012 | Polaroid FLM-3734B 37 in. LCD HDTV

1 Answer

When powering up the Sherwood RVD-7090R Amp, it switches off again almost instantaniously.... Any suggestions ??


hi,
First of all remove all the speaker connections from the amplifier. After that power the amplifier and check that it gose to standby again ( protect show) or not . if not, then any of the speaker is damaged. If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier have some problem. there are five amplifiers in this AV receiver. This problem occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
For that you need digital multimeter,soledring iron screwdrivers etc
Open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

Aug 11, 2011 | Sherwood RVD-7090R

1 Answer

I called a Denon service center,and the can repair it for $250.00 to $300.00 or less. The problem is Display not lit, and power indicator is flashing rapidly. I tried to initialization of the...


hi,
Blinking of power indicator means the amplifier is in protection mode.First of all remove all the speaker connections from the amplifier. After that power the amplifier and check the protect show or not . if not, then any of the speaker is damaged. If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier have some problem. There are seven amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
For that you need digital multimeter,soledring iron screwdrivers etc
Open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

May 19, 2011 | Denon AVR-885 Receiver

2 Answers

I have a F Ford Focus LX 2005 model, and my cigarette lighter socket is not working, and therefore does not charge my sat-nav. I have checked the passenger compartment fusebox, however the fuse-box...


First, if there is a bad fuse you will be able ot tell the difference immediately. As there will be a break in the fuse-able bit.

zim1308_0.jpg.

Good Bad (Blown)

that being said if you do find that the fuse is still good the next thing you will have to do is preform a continuity test. Using a Test light (you can get one form your local Sears or auto supply store) connect it to a GOOD known ground. (usually the chassis is fine as long as there is no paint on the part you are clipping to). and touch it to the power side of your accessory outlet. if the light goes on then you need to try testing the wire from the fuse block to the outlet itself,

Apr 22, 2011 | Ford Focus Cars & Trucks

1 Answer

Receiver flashes protect on screen


hi,
First of all remove all the speaker connections from the amplifier. After that power the amplifier and check the protect show or not . if not, then any of the speaker is damaged. If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier get some problem. there are six amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
for that you need digital multimeter,soledring iron screwdrivers etc
open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

Mar 08, 2011 | Teac AG-V8060 Receiver

1 Answer

How do i remove protect mode


hi,
First of all remove all the speaker connections from the amplifier. After that power the amplifier and check the protect show or not . if not, then any of the speaker is damaged. If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Noramlly AV receivers show this when any of the output amplifier get some problem. there are six amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
for that you need digital multimeter,soledring iron screwdrivers etc
open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

Jan 30, 2011 | Sony STR-DB790 Receiver

1 Answer

My dell percision 470 is dead. Don't know if I need a new power supply or motherboard. Dave Moll


you can check the power supply by voltmeter if it works then may be mother board is dead

Aug 18, 2010 | Dell Motherboard For Precision 470...

1 Answer

No interior lights or power mirror working.


The fuse for the interior lights has a yellow plastic holder
covering it. Full the holder all the way out, fuse and all, with a needle nose pliers.
Replace the fuse. Disconnect the power to the radio you put in before you do this. Replace with new fuse. Check lights. If light work, plug in radio. If fuse blows, radio connection is bad (grounded hot wire). Fix wiring, replace fuse, and try again.
You could also have messed up the multi-function switch
(turn signal switch). EVERYTHING go's through this piece of crapo switch, and it costs a fortune to replace. Do the wiggle test on the switch, wiggle it while trying the things that do not work, front to back of truck, NOT up and down like your turning the switch on, the opposite way, front to back of truck. If things flassh off & on that stopped working, yopu found the problem. DONT pusy too hard, push gently on end of stalk, there is a lot of leverage there!

Sep 16, 2008 | 1998 Dodge Ram

1 Answer

Durabrand rb-22j1a wine cooler----no power to unit at all after being plugged in, all fuses are good.


I had this problem, no power, no light. It was the power supply output fuse. It appears to not be blown, but a continuity check across the fuse shows an open. Unsolder and replace the 5A, 250V fuse with some locally available Radio Shack parts (holder - 270-739, fuse 270-1071). Access to the power supply board is on the rear, remove the screws on the plastic plate, including the one hidden under the QC sticker. While you are in there, clean the fan and the aluminium fins on the heat sink (cools the Peltier device).

If your fuses are not blown, look at the electrolytic capacitors (the black or blue round metal cans with the aluminium X on the top) to see if they are bulging. Replace any that are bad (a common problem in switching power supplies).

Hope this helps,

Andy B

May 05, 2008 | Heating & Cooling

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