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I am looking to repair a laser diode power management supply, HN-802, which is for a Rofin-Sinar laser. I can't find the manual on it anywhere, or anywhere that carries it. Any help would be appreciated.

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

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SOURCE: AKAI MLT168A Power Supply

Here are the values for the parts:
R104 and R105 are 100 ohms 5% 1 watt but you can use 2 watts.
R107 is 200 ohms 5% 1 or 2 watts.
C17 is 2200pF 10% 1Kv.

Posted on Dec 06, 2008

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SOURCE: Sharp lc 60e88un shutdown the 24v from power board no 12v

to check for led eror vol_ channel+ hold and press power switch once andrelease only power switch triangle light should come on then release the vol and channel knobs if set comes on the leds defective in screen

Posted on Mar 02, 2012

vinceisaac
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SOURCE: LG L4200tc NO POWER

did you tried already to replaced bulging electrolytic capacitor at the power supply.

Posted on Aug 04, 2012

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Looking for a manual for a ONAN GEN SET model 6.5 HN-3CR/1600 4P


Try here
http://www.rv-coach.com/current_category.2177/Forum.94756/forum_thread_full.htmlLHA4LY

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Philips 32PFL3505D/F7 32-Inch LCD HDTV keeps turning off when I turn it on


very common failure on this tv is electrolytic capacitors failing on the power supply, the module that your power cord plugs into. The Caps can appear to have swollen tops, replace with same type or slightly higher working voltage. Observe capacitor polarity when installing new parts. Probably 1000 mfd @ 16V could be 1000mfd @ 25V.
you need soldering skills to repair the parts in question.

Mar 03, 2013 | Philips 32PFL3505D 32 in LCD TV

1 Answer

My emerson lc320em1f tv won't turn on.


Calm down, Calm down! Your power supply board is at fault. On the power supply, you have a bad diode. Location of this diode is D639. Replace it with an NTE 5087A. Thanks for asking, Matt of Martins TV Repair.

Jan 27, 2013 | Televison & Video

2 Answers

Speakers no power


No Power means no supply. Step by step troubleshooting is recommended. Start with the main source power,then the cable wires,then to the primary section of the circuit board.Some components may be busted already.

Sep 30, 2012 | Adcom Audio Players & Recorders

2 Answers

Where is My Philips 32pfl3505d f7 LCD TV fuses


I assume you are referring to the ac fuse, it is located on the power supply board. Just follow the ac power cord and it should lead you to it. If your set doesn't have a built in power cord, the fuse will be next to the power cord connector.

Sep 01, 2012 | Philips 32PFL3505D 32 in LCD TV

3 Answers

My misubishi ws-65809 would not turn on and had the 2-2 blinking light self test. I pulled the convergence board to replace the IC's and when I inspected the board I found that a diode in the middle of...


Hi, well when testing a diode you DO NOT use the meter set to OHMS, indeed you need to use a meter with a "Diode test" feature, you see when using a test with only OHMS, it will NOT supply enough current, unlike the diode test function, to bias the junction correctly, and give you the proper reading. Using OHMS only will and does give erroneous readings always.
Now as to the problem, i see where another person has jumped on the old "Capacitor" bandwagon, if only all faults were so... look without inspecting the unit and taking voltage and current readings it is simply frivolousness to state such a thing unless one has direct knowledge of the fault?

Look to effect ANY repairs one simply MUST obtain a service manual and start with the Power supply and check the voltages there and work out, there simply is NO other way.
The fault you describe may have a myriad of reasons why the unit is doing this "Fault" there is NO shortcut, NO magic method of diagnosing anything OK. With a problem like this unless VERY experienced, one should simply replace any suspected boards, "On Spec" as it were.
Before we can attempt to repair anything at all, there is one thing that one MUST do before anything else is done. Now that is, the making sure that the Power Supply,of the unit, no matter what it is, has the correct Voltages, coming into it, and more importantly, coming OUT of it. This is absolutely imperative, as, IF these Voltages are NOT correct then NOTHING will work, properly at all. So we must measure these voltages with a Volt Meter. All Voltage measurements are made with reference to ground. Meaning we clip, our Black, Minus, Lead onto the Earth, or Chassis, or Negative (-) "Rail" of the Power Supply. Now with the Red lead, we can now, measure these Voltages. Now sometimes, the Voltage of each Output is annotated,or written, onto the PCB, that will indicate the Voltage of that output. However most usually they are NOT, so in this case we MUST have a manual to tell us. Now this manual is called a "Service Manual" or sometimes a "Repair manual" This manual is absolutely vital so much so, that it can be near impossible to do without it. As apart from having "Troubleshooting" step through's, it also has our Voltages. When we measure these Voltages they are 100% EXACT, so IF the Voltage you measure, except for a few rare exceptions, the "Rail" that is NOT at the correct voltage is the one, that the "Fault/Cause" is "ON". Therefore we can now work outwards from the Power Supply, looking for the cause of that problem. Now if the Voltage is Lower than specified, we are invariably looking for a "Short", something has "Faulted" and is "Dragging" the Power Rail down to earth. Now if the "Rail" is "Higher" than the specified Voltage then the fault we are looking for is usually some sort of "Open Circuit" possibly a Diode, or resistor that has changed it's "Value". Now knowing this and knowing that the Power Supply is the FIRST place to start you troubleshooting and repair from. You now have a MUCH better chance of a "Fix". One thing more, DO NOT forget to get your SERVICE MANUAL. for you exact make & model. even if you pay for it, you will be glad you did.
OK if it is shutting down, after that amount of time, of working and then faulting, then it is most definitely a "Thermal" problem, the way we "Find" problems such as this is "Freeze Spray" you use this on each component that is suspected of being the "Culprit" and you will soon,find that errant component. Now also not every fault is a Capacitor, I see many, many people that think, that Capacitors are always the "Culprit" now while that may be true in a few cases, a faulty Electrolytic Cap, or ordinary, Cap goes faulty, this is only a SYMPTOM, something has damaged those caps causing them to "Fail". One MUST always find the root "Cause", otherwise if you just treat, the SYMPTOM, the "Cause" will just make the "Symptom" come back, in short order, as the prime cause still, hasn't been fixed., Now Capacitors hate AC ripple, or Over Voltage. Thats it. Oh.. and Heat, if these Capacitors, are too close to a Heat Source, then thats a prime cause of failure. Resistors, hardly ever go faulty,and if they do, it is generally obvious. However it doesn't hurt to check values with our Multimeter. Remember though resistors are made, with up to 20% tolerance from stated value, as such, are not too critical, unless in Timing circuits etc. Always check, the Values, of resistors, as with any other component, with the power OFF. Now Diodes especially "Zener Diode", are another thing to check, those and ordinary "Signal Diode" should always be suspect. next we have Transistors and IC's. The Transistors MUST ALL be checked to see if they have a good, "Junction" this is done, with our meter set to "Diode Test" and usually are about 0.6 to 0.7. With IC's you must check, voltage levels, or Logic Levels, going in and out, have a look at the circuit diagram, and it will tell you what they should be. It is a good idea to always measure the Power Supply voltages, see if a "Rail" is Low, that will be because some component has gone somewhat or all short circuit, to Earth, now, if the "Rail" is Higher, suspect an "Open Circuit" component, like a Diode, or Transistor. The voltages expressed in the manual are spot on, ANY variation MUST be investigated. I have been doing all this for over 30 years now, and I do indeed wish, we could have a set of "Symptoms" and be ables to say.. "Oh that;s the so-in-so and replace this" however unfortunately this although does happen, most "Symptoms" can have literally tens, of "Causes" all often "Interlinked" One simply has to do a methodical troubleshooting procedure, and always think, "are my Voltages Correct" as this is how, you Fix the problem, by making them so. Keep up the good work. If that link above doesn't furnish a Service manual, it is imperative you get one, even if you must pay for it. It will pay for itself in about 2 mins.

Sep 27, 2011 | Mitsubishi WS-65809 65" Rear Projection...

3 Answers

Fuse keeps blowing in my philips 32pfl3505d/f7 tv


Good day!!!!


That problem is cause of shorted bridge diode or power mosfet..

just see the picture below to see the image of bridge diode and power mosfet..

bugoy31_16.jpg

If you don't have a tools or you have no electronic background you only have to is order the new power supply board..

I hope this solution will be helpful..Thanks for using fixya....

Sep 04, 2011 | Philips 32PFL3505D 32 in LCD TV

1 Answer

Hi Skipping problem with a NAD C545BEE, plays OK for 1 minute, then skips randomly wthin the track, then will skip to different tracks on the CD, like fast forwarding. No problems with the disc themselves


hi
There is a diode in the power supply which gives dc supply to the laser focusing coil driver ic . if the diode get faulty this problem can occur. Just replace all the rectifier diodes in the power supply stage. Its better than searching for the exact one. then check the cd player is it skips the tracks. if then also its skips the tracks then you have to change the laser pickup unit.
ok

May 19, 2011 | NAD C545BEE

1 Answer

Hi all i own a behringer XENYX 802 audio mixer. this device is powered by a power supply that as input to the mixer gives 18,5 x2 Ac, 150ma. i would like to know in which point of the circuit i can...


You would need TWO DC supplies as they use AC so they can create both a plus and minus 15 volt power source to run the internal op amps.

Here is a schematic for the 1202 which has same power supply configuration as the 802.

http://elektrotanya.com/behringer_xenyx_1202.pdf/download.html

Scroll down to the little link "Get Manual" and download the service manual and schematic. You will find the power input in the upper left corner of page 5.

Mar 29, 2011 | Behringer Xenyx 802 8-input 2-bus Mixer W/...

2 Answers

Donde encuentro manuales de esta impresora DELL 5319n





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Dec 13, 2010 | Dell 5310n Laser Printer

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