Question about Audio Technica ATW-R12 DIVERSITY RECEIVER (T3) ATWR12T3 Microphone

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No power. Fuses ok. Power transformer ok. Screw came out of circuit board, but no visible damage.

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If a screw was bouncing around in the case it could have shorted something causing damage...

Make sure the power adapter is the EXACT one that is used for the unit.

Check the circuit traces from the power connector under a bright light. A short can sometimes "fuse" narrow traces burning them open just like a fuse.

If you haven't done so, check the power adapter with a meter to verify the voltage.

Posted on Sep 11, 2010

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Its showing F70 error on display. Only workd on DVD mode, when i turn it on any other mode it just shows F70, switch power off. All fuses are ok, no any visibly damaged components


The fuse is a part of the problem it is for safety measures
the problem is in between the power supply regulators, capacitors and power amplifier circuit board.
usually a regulator or an output transistor can cause this error.
hope this helps.


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I have just bought a euroline 40 glass washer but it keeps tripping all my fuses when I turn it on I have tried different circuits but still trips


Possible there is short within the power board and so it uses more current than designed. You can remove the panel and check for short within the panel board. Check for visible damage to the board. It can be shorted surge capacitors, protectors or rectifiers. If not there can be damage within Also disconnect the motor drive , isolating the circuit and if the power does not trip you can check this circuit.

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I have a panasonic th-42px80u, i turned it on and there was a pop and a flash from the back of the tv. It will not power up and have no red light. ive taken apart and inspected power supply board for burn...


Look for a fried (possibly exploded) transistor or diode on the power supply board. In particular, look at the transistor mounted on a heat sink (metal radiator block) between the fuse and the largest transformer on the board. It may also have a damaged regulator chip driving it. Modern TV sets operated by remote controls generally have the power supply split into two sections - standby and main. Your problem is most likely in the main section.

A voltage sniffer won't tell you much - most sets have power right up to the fuse on the power supply board. If the fuse is blown, don't bother replacing it until you find out what blew it - you'll just waste another fuse. I generally start by doing ohmmeter checks (power disconnected!) on the diodes and transistors - anything reading less than 1 Ohm is probably fried or is being shorted through a transformer winding by another fried component. Other readings must be interpreted according to the circuit design.

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1 Answer

It will not power up. Fuses are good and transformer is good


you may have a problem withe the power supply circuit. It is the first circuit that is found internally after the power chord if you would trace it from the power chord to the inside. IT may be a damaged capacitor or the entire circuit may have gone bad. Check for swollen capacitors or leaking ones or traces of burn. Damages may also not be visible.

Jul 16, 2010 | Onkyo TX-SV373 Receiver

2 Answers

The unit has no power when pluged in it must have a blown fuse as i said before how do i replace it


Hi diamonddan11

I have posted to your original request for help the details of this. here is a sumary


  1. mains power fuse FU11 is located INSIDE the deck on the same circuit board and the mains on off switch.
  2. There is a thermal fuse that is not changeable inside the widnings of the transformer. This is can be repaired but generally it is considered that you replace the transformer
  3. on the printed circuit board attached to the secondary side of the transformer you will find 5-6 pico fuses, or circuit protectors. The are small black 2 pin devices that are marked on the board as IC901 to IC905
  4. the main power regulator board REGB ASSLY also has a circuit protector IC911.
  5. Thjere are several others in power supply areas marked as IC907, 908, 909, 910, 913, 914.
OK, thats a run down of the fuses in the unit. Non are considered to be user replaceable parts. If the deck has had the wrong mains voltage applied, it is likely that it has blown the primary fuse, FU11. If you do replace that fuse, and the unit still does not work, the transformer may be blown, or any one or combination of the Circuit protector type soldered in fuses may need to be replaced also. If you cannot follow what I have given you here, I suggest you take it to a Pioneer Authorised Service Center.

I am more than happy to answer any other questions you may have about it, just give me a hoy :) If you are still unsure, or have problems, then before you give a rating for this advice, please get back to me and we can try some more things.
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

Jun 21, 2008 | Audio Players & Recorders

1 Answer

GE Monogram ZV750SY Kitchen Hood


http://www.appliance-parts-warehouse.com

first examine part #166 and related parts for visible damage.
If the circuit board is burned out, then the above website is a suggestion for ordering.
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Jun 14, 2008 | GE ZV750SY Kitchen Hood

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Power failure


First check to see if your turntable has fuses installed on the main PC board, which is located underneath the turntable platter. They should be easily visible once you remove the black protective cover underneath your turntable platter. Check them out first to see if they are blown, if so, replace with equal rating fuses. If you don't see any fuses, or the fuses look fine, then your power transformer has gone out - this is the grey metal box looking thing next to your PC board. This would need to be replaced. Parts for this model can be purchased HERE - just pick your turntable, and that's it!

- DJ PRO LAB

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1 Answer

Aprilaire 550 doesn't seem to be getting power


See if you have a screw marked EAC This to power an Electronic Air Cleaner unlike the HUM it also gets 120VAC only when the fan comes on. Not sure what make of furnace you have but if your heat is working OK don'tn change the control board the can be very expensive. there are other ways to wire humidifiers without using the HUN screw

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1 Answer

Subwoofer unit not powering on


Your sub woofer's transformer is probably damaged...You can check for this using a multimeter..Also check for any open circuits btween the transformer and the power suply..Most likely its the transformer itself check this first..

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