Question about Denon AVR-681 Receiver

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Resistors How do you know what to ask for? I mean the one I removed was powder Blue does that mean anything?

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If the resistor has been completely destroyed, look on the board for the circuit designation (eg. Rxxx). With that someone with the service manual or access to teh schematic can provide the value and wattage.
Dan

Posted on Mar 19, 2008

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I am looking for a schematic for the AVR-681. Same problem with mine shutting down. Thank you.
Niles

Posted on Dec 21, 2009

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Posted on Jan 02, 2017

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I have a 2007 HHR, my temp gauge stops working and the same time the a/c stops blowing cold air...I called myself checking fuses and a relay, can you help?


You mean the blower motor stops blowing air , the A/C compressor is still engaged ? The temp gauge shouldn't have anything to do with the blower motor .But stranger things have happened on these systems when they are controlled by a electronic module (BCM )
Circuit/System Description
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The ECM sends the temperature data via high speed GMLAN serial data to the body control module (BCM). The BCM then sends the information via low speed GMLAN to the IPC in order to display the engine temperature.
The BCM applies voltage to the blower motor through the HVAC relay. The resistors and the blower motor are in a series circuit. The following list represents the number of resistors in series with the blower motor per particular speed request:
• Low speed--4 resistors
• Medium 1 speed--3 resistors
• Medium 2 speed--2 resistors
When the operator requests High speed, the HVAC control assembly applies ground directly to the blower motor through the high blower motor control circuit.
Do you know anything about automotive serial data communications ? GMLAN Is general motors version of C.A.N controller area network .

How to Diagnose Controller Area Network CAN

Do you know anything about diagnosing automotive electronics ? Using a digital volt ohm meter ? Using wiring diagrams to pin point locations in a electrical circuit for testing ? Do you know what a factory componet location diagram is ? It takes more then looking at fuse's an relays , to see if current is flowing in a electrical circuit .

Electric Testing Techniques You Need to Know

ECM Inputs and Outputs Diagnosis

http://www.bbbind.com/free_tsb.html Free wiring diagrams ! Enter vehicle info. Year , make , model and engine size ! Under system click on HVAC , under subsystem HVAC Controls . Then click the search button , then click the first blue link . This is the blower motor control diagram . Do you know how to read a wiring diagram ?

Apr 30, 2017 | Cars & Trucks

1 Answer

How is powder coating applied?


Electrostatic spraying is the most widely accepted powder application method by powder coating services and the electrostatic powder gun is the most important piece of equipment in this method. A fluid bed is also used for applying powder coating.

Jul 12, 2013 | Washing Machines

2 Answers

My TV has problem with the trac sistem and I see the colors triple, red, green and blue


see attached photos of a convergence problem: do they look ANYTHING like your problem?


10_28_2011_10_16_27_pm.jpg10_28_2011_10_16_50_pm.jpg10_28_2011_10_17_13_pm.jpg

Oct 28, 2011 | Televison & Video

1 Answer

I have a Panasonic HDTV that was made in July 2002 Model#-PT-61HX42F. The screen just went off and the power button keeps blinking 3 times then goes off and repeats but the picture will not come back on


3 blinks is short protection and usually means one of the 2.2 ohm blue resistors in front of the convergence IC chips is bad---the chips are black and 2 1/2 by 1 1/2 tall and should have STK392-110 on the front of them; locate them and look at all the (about 10) powder blue resistors in front of them----if you find one or more discolored or white in the middle the chips and the resistor needs to be replaced.

It can be a do it your self repair (I have start to finish instructions if you need them).

SD TECH

Jun 05, 2011 | Panasonic Televison & Video

1 Answer

My red convergence won't move side to side only up and down what do i do? the blue moves up down and side to side, i noticed this when the picture as we were watching it decided to turn 3d, so i tried to...


Most of these Philips sets use two STK-392-120 convergence IC chips; if you can locate them inside look at all the little blue resistors to the left and front of them---these are feedback (protect) parts---if any of them are discolored in the middle--not powder blue but somewhat white in the middle---you have a bad ic and both need to be replaced---most of the protect resistors are 6.8 ohm in value. If this has been helpful give me a vote.

Aug 14, 2009 | Philips 60PW9363 60" Rear Projection...

1 Answer

Hello My printer(3100 cn dell) every time I


Hi,

This means that loose toner powder has gotten in the way of the lazer "eye". If you open up the front door, you will see a blue tab toward the right, pull that toward you, then look on the right side of the printer, you will see that a door has opened. Pull that blue stick out as far as you can and you will see some toner powder on that, clear it off, and make sure the little pad is clean. After you have cleared the powder off, slide it back in and out a few times, this will clean the eye. Run another document through, if the line is still there, just clean another time. Should go away. I have this problem alot.

Aug 13, 2009 | Dell 3100cn Laser Printer

1 Answer

My t v pictures are sharing colors


if its a pt47wx53 it sounds like the 2 convergence Ic chips are gone--also--there are several blue 2.2 ohm resistors around them---if any are discolored you will need to replace them also---this set uses two STK-392-110 convergence IC chips---you will have to remove the light box---I can tell you how--look for the convergence ic's inside and take a close look at the 10 or 12 powder blue resistors around them---if any two are white in the middle(discolored) they are gone--if you need any help let me know.

Aug 08, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

RESISTORS


the baby blue ones with the lines Blue,Gray, Gold ,and gold are the 6.8 ohm resistors the other resistors with the lines blue,orange,brown and gold are 630 ohm , Yes if those resistors are open even one of them the set will not converge. A digital ohm meter is more accurate, but you have to remove one side of the resistor to check them and if theyre open they wont read anything. If you leave them in circuit even a open resistor can measure good due to the resistance in the circuit. Removing 1 leg out of circuit then checking will spot an open resistor quickly.

Apr 04, 2008 | Philips 55PP9352 55" Projection Television

1 Answer

Convergence


Next to the ICs you will see about 6 or 7 resistors with no color bands usually green in panasonic they all look identical. Check them with a ohms meter to see if any are open. The ICs usually take out one or two of these resistors when they go out.

Jan 28, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Hitachi, Projection Color TV,C43-F550,C43-F550p,C50-F550p


what do you mean when you say resistors look like they were dry??

did you try fixing the wires? i would do that first and see if anything else is bad.

Jan 07, 2008 | Hitachi 43UWX10B 43" Rear Projection...

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