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Burned resistors I need a schematic, or at least a parts list, for a Behringer BXR 1800 amp. R3 and R7 are burned up beyond recognition. Or, if you just know the values of R3 and R7, that would be great.

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  • Contributor
  • 21 Answers

HI try this link it mite help. :)

Posted on Feb 14, 2014

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Posted on Jan 02, 2017

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marsrover
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SOURCE: Optronica amp one channel out.

disconnect any input cable and test-----------if you still have a problem connect your right speakers cables(which supposed to be good)instead of left speakers cable and test------ if the problem solved you will have a problem in left side(cables or speaker)-------if not solved you will have a problem in your amp it self. and needs hardware repair.

Posted on Aug 03, 2008

  • 4234 Answers

SOURCE: Need a PV 1.3K schematic...

As far as I know, these are not available directly on the web. Contact Peavey directly and ask for service parts. They will sell you the manual for $20 or so.

Dan

Posted on Aug 19, 2009

  • 1 Answer

SOURCE: Acoustic Image Contra series II - No audio passing

I decided that without a schematic and parts list I shouldn't even attempt to repair it. I had taken the cover off and disconnected the control board from the amp. When putting it back together to return to owner, I noticed the plug and socket for the control board did not go together properly. After a little maneuvering, I managed to get then joined, and just like that the amp was working again. I suspect that who ever had repaired the ground on the guitar had opened the amp up as well, and just didn't get it back together properly. The amp wasn't really damaged, after all.

Posted on Dec 10, 2009

  • 1 Answer

SOURCE: my Sansui amplifier AU-D607X got smoke,then when i

i hae same model of ur amp just explain wc part of the resistor got burned so i will have to look inside my amp....

Posted on Mar 18, 2010

MNfisherman
  • 11896 Answers

SOURCE: I have a Kenwood Model K-88 Amp. The 2-resistors

Those are common parts. You can get them at partstore .com

Posted on Jun 10, 2010

Testimonial: "Yes I can get them, but I have to know the value of them first"

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Values of the resistors


Resistors R1, R2, R3, and R4 are arranged in a circuit as shown in the figure above. The direction of positive currents I1, I2, I3, and I4 through the resistors are shown. (i.e., negative current values correspond to currents in the opposite direction to that shown above). The values for the resistors and the batteries in the circuit are: R1 = 100 ?, R2 = 200 ?, R3 = 30 ?, R4 = 400 ?, V1 = 4 V, and V2 = 12 V.

Nov 06, 2016 | Televison & Video

1 Answer

Red & green lines top and bottom and picture curve in at top and bottom


That all too common problem is the failure of the convergence amps in that unit which takes two STK392-040 Sanyo built Ics at board location Icz103 and Icz104 and usually one or more pico fuses and some low ohm resistors. F1018 sometimes opens due to stress but generally it's just the two 6.3 amp pico fuses and if they have opened I strongly recommend replacing them with a 6.3 amp slo-blo pico.
The low ohm resistors at RZ147, RZ146 usually show signs of heat stress and may even be burned beyond recognition. Testing at that point is almost unnecessary but will confirm their change in value. Almost always they need to be replaced.
Other than than that a good grade of solder and some heat sink compound and that's all the parts you need.. And to answer your initial question, yes about 40 bucks in parts.
Have a great day!
Bill

Dec 02, 2007 | Akai PTH5498 54" Rear Projection...

1 Answer

There are some burnt carbon resistors beyond recognition on a peavey tnt bass combo.so I need the schematic diagram


Try these schematics:

http://elektrotanya.com/peavey_tnt115s_sch.pdf/download.html

http://elektrotanya.com/peavey_tnt_100_1974.pdf/download.html

Scroll down to "Get Manual" at the web page and click on it to download.

Please note that on the first schematic above, the power amp schematic is way down beyond the parts list and layout of the preamp section... keep scrolling. ALSO the powoer amp shows a real WIERD connection where the output transistors drive against ground and the center tap of the power supply transformer for the power amp portion then bounces around with the audio output... that is a wierd connection but it is possible.

May 23, 2011 | Peavey Max 126 10 Watt Combo Bass...

1 Answer

A transistor or resistor burnt beyond recognition i need a wiring diagram to identify the type


You have not mentioned what electronic equipment you are requesting the details.
You will be able to confirm the transistor value from the stage where it has burned which also goes for the resistor. So take tech help than to try with trials to damage the set much further.

Jan 31, 2011 | Car Audio & Video

2 Answers

18 volt supply too low. resistor R42 burned. Q20 not installed. schematic shows 4700 ohm resistor with Q20 installed. What value if Q20 gone?


I would fit the same type, unless the schematic shows a change, which clearly it doesn't. However I would be surprised if R42 burnt up alone! Look at the schematic, is R42 linked to any other transistor or part? If so check them if you can.
By the way is R42 a fuseable resistor, for example is the symbol on the schematic or on PC board different to most other resistors?

Feb 18, 2010 | KLH ASW10-120 Subwoofer

1 Answer

Mitsubishi VCR HS-U57 power supply questions


The closest model I have is HS-U61 it may be the same
D901,902,903 and 904 -are part of a bridge rectifier -standard B+ diodes DSA3A1 - 264P430030
D913,D914-(connected directly to R902 through transformer winding to D914) -1SS82 standard switch diode
D917- (connected to base of Q903 and D916) 1S2076 standard switch diode.
Check if they are located as described.

Oct 27, 2009 | Televison & Video

1 Answer

Excessive brightness with retrace lines


Here are the values:
RY04 >>>> 68 ohms >>>> 1 Watt
RY04A >>> 47 ohms >>>> 0.5 watt
RY02A >>> 330 Ohms >>> 0.25 Watt.

All resistors should be 5% tolerance.

Apr 17, 2008 | Apex Digital GT2715DV 27 in. TV/DVD Combo

1 Answer

Curves in the top and bottom of screen.Picture image is discolored.


The convergence amps have most likely failed and taken with them the +/- 30v line. Your unit takes two STK392-040 Sanyo built Ics at board location Icz103 and Icz104 and usually one or more pico fuses and some low ohm resistors. F1018 sometimes opens due to stress but generally it's just the two 6.3 amp pico fuses and if they have opened I strongly recommend replacing them with a 6.3 amp slo-blo pico.
The low ohm resistors at RZ147, RZ146 usually show signs of heat stress and may even be burned beyond recognition. Testing at that point is almost unnecessary but will confirm their change in value. Almost always they need to be replaced.
A quality shop will have this unit back on its feet in no time - faster if they have the parts in-stock, which you might ask about when you shop around for a good repair facility.
Have a great day!
Bill

Oct 29, 2007 | Akai PTH5498 54" Rear Projection...

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