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Peavey 400BH the two resistors that were fried R58 and R59, 47 Ohm Flame proofs. I replaced some of t he 2K 5W, replaced the .1 Ohm 10 Watt, (2) replaced all the .33 Ohm 10 watt, the 1K 5 watts, and the 5.6 Ohm 5 watt. When I plug in the red/red-yellow/red, it goes down to 0 volts. I have it plugged in to a 100 watt light bulb to save the fuse. the lamp glows brightly. Now, when I unplug that secondary from the 400BH, and just leave the 15 volt supply on (orange/or-wh, orange works fine. Replaced the Diodes CR16,17,18,19.eplaced the Two Zeners. all the 2K 5W resistors test good out of the circuit.

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Thanks for the update. I'll need to look through my records for similar problems. Stay tuned...
Dan

Posted on Jun 13, 2008

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I have a constant "crackling" noise in the left channel. I've replaced all 4 power transistors. The crackling is still there. Any clues?


Look for an open resistor in that channel. could be the large emitter resistor, or one of the low-ohm flame-proof resistors.

Jan 30, 2013 | Sony STR-DE197 Receiver

1 Answer

Onkyo HT-R500 no display


Look on line for service manual. Display problem is usually traced to 1, or more, of 3 resistors in the AC supply to the display. It appears that the resistors are supposed to be 1/2 watt but the one I removed from my unit was only 1/4 watt. The resistors are mounted on a small board mounted on the front side of the main transformer - right most board. I had to unscrew the transformer to access the resistor. I looked at voltages coming out of the transformer and the the same voltages leaving the circuit board. There is a 1 Ohm, a .47 Ohm and another that supply AC voltage to different parts of the display. I found one resistor open. Replaced it and I now have an operating unit.

Feb 14, 2012 | Onkyo HTR500 Receiver

1 Answer

How much can you sell 2 of the following? I need to replace 2-100 ohm 2 watts resistors in my Kustom Profile_one unit. You recommended replacing with 2-130 ohm 2 watt metal oxide resistors. Currently one...


It sounds awfully like the resistors are close to breakdown voltage, I would Suggest that you do replace them with the resistors specified, because using anything else in a high voltage product is a fire risk, now who was it that suggested replacing them with higher ohm resistors? was it a service tech or was that right out of a manual or was if from the manufacturer themselves?
Anything to do with resistor replacement, as yo sound like you know, should be taken very carefully, because if you use the wrong resistors, you risk losing the components after the resister due to a higher voltage or sometimes even causing them to stop working due to a lack of current...
Be very careful and please go back to the manufacturer to get the exact resistors quoted from them and make sure you have it in writing from them so that if something fails you have at least done what you could.
Hope this helps, need any more advice, just ask!
***Please remember that advice on electrical appliances needs to be made by a licensed technician that had experience with that specific product otherwise you risk voiding the warranty or sometimes even risk your own life when concerning high voltage products***

Nov 23, 2010 | Audio & Video Receivers

2 Answers

Unit turns on for about 5 seconds and turns off with stand by light flashing


you have shorted output transistors which is causing the unit to go into protect mode. You can try factory reset by turning off unit then holding down speaker a and b buttons then turning back on.

Apr 12, 2010 | Denon AVR-681 Receiver

2 Answers

WILL NOT TURN ON


Sir;

friend of mind had the same model # and he give me the color band for the resistor

Nov 18, 2008 | Yamaha HTR-5560 Receiver

1 Answer

Insignia NS-R5100 5.1ch receiver shuts down in a few seconds and Stand-by light starts flashing.


the output transistors are blown in one or more channels also the driver transistors are blown in the same channel.

you can find this problem real easy using a DVOM (digital volt ohm meter) on the continuity test(BEEP).

start be removing the amp section from the receiver and laying it on the table bench whatever no going from B-C and C-E if any beeb there junk and the driver transistors are also and there are a few resistors that are junk.

parts list

2@2sd2390 sanken get from newark and only newark/farnell
2@2sb1560 sanken get from newark and only newark/farnell
2@2sd947 from newark
4@ 2sc1841 or 2sc1845 to replace 2sc1845
4@ 2sa998 or 2sa992 to replace 2sa992
8@ .22 ohm 1/4 watt metal film resistor 1%
2@ 4.7 ohm 1/4 watt metal film resistor 1%

this is a parts list for 2 channels
only get the powertransistors (the sanken) from newark any others i have found as counterfeit and destroy stuff and dont work

i dont remember location #'s on the board but

Aug 24, 2008 | Audio & Video Receivers

3 Answers

Two amp


I don't know why you'd set the Peavey to 2 ohm to drive 8 ohm speakers??? My other thought is... I wonder if the phase is correct. try reversing one of the speaker wires Left or right side.

Geno

Feb 27, 2008 | Harman Kardon AVR 630 Receiver

1 Answer

Onkyo TX-DS595 with no display?


Ran my 595 blind for 2 years and finally spent the time to diagnose it this year. Turns out that one of the resistors that is on the power supply went bad. Similar problems have happened with later models so i thought the same may be true for the DS595.

My Receiver has always run fine.. just no display anymore.

Here's the fix. Replace R9501. its on the larger board that is part of the Power Supply. You will have to take the 4 large screws out of the base of the big heavy power supply block to find the resistor. I believe the old resistors is a 1/4 Watt. I replaced it with a 1 Watt so that it can handle the heat of being turned on and off better.

The resistor you will need to buy is 2.0 Ohm. I wouldn't go anything less than a 1/2 Watt and preferably 1 Watt.

My receiver works line new now!


Nov 15, 2007 | Onkyo TX-DS595 Receiver

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