Question about Peavey Pv 2600 Power Amplifier

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I NEEDYOU NOW THE VALUE FOR RESITOR R338 - Peavey Pv 2600 Power Amplifier

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The HIGHEST instance number I can find on the schematic is R337... I cannot find R338.

Could you be reading R336 instead? It is a 100 ohm, 1/4 Watt.

If this is not the one, please advise other components it connects to and I will try to figure it out.

Posted on Sep 28, 2010

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Posted on Jan 02, 2017

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Estimated value of Gibson L-5 archtop in good condition, label ser #95606, guaranteed


Well, Gibson reused their serial numbers sometimes, causing confusion. It was made in either 1938 or in 1962 - 1964.

If the serial number is seen in the soundhole it is a 1938 model, if on the headstock (the more modern practice) a 1962- 1964 (no closer records were kept for those years).

Depending on condition Reverb.com values the 1938 model at about US$16000 and the 1963 model at US$9500 - $13500.

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Sir, I would like to know where I can buy parts for my behringer, I have three and the main amp board is blown. Thanks


The Behringer parts distributor is Fullcompass.com... Lots of luck... I waited six months for a couple pots and capacitors... finally cancelled the order and got scrapped out boards from Ebay to effect the repair.
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It appears to be a 430 ohm 5 Watt FLAMEPROOF resistor... The resistance value could also be 470 ohms...

Here is link to a 430 ohm:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=PPC5W430TB-ND

Here is link to schematic, however the resistance value is blurred but starts with 4 and is three digits leaving only 430 or 470 as the value:

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My TP100 snare pad is very glitchy. Often when I hit it, it makes no sound at all, or it misses hits. I suspect something is wrong with the small sensitivity dial (not the big red dial), because the...


The dial could have a desoldered pin or oxydized slider contacts. Try to resolder the pins, but if that doesn't solve it then you would need to disassemble and clean the internal slide contacts on the dial which can be a bit difficult, so the alternative is to replace the dial if you can find a spare one.

To bypass the dial (with fixed resistances) you need to know the resistance at each side of the dial when it is in the position that suits your needs (connect the snare to a working input, set the sensitivity as needed, mark the position of the dial).

The resistance can be measured with an ohm meter.
To be sure that the measuring will be accurate, it is ok to remove the dial from the circuit board (adjacent components may affect the measured value).
You should do the measuring on a dial that is good.

After you've removed the dial, set it to the position that you marked previously.

Measure the resistance between left and middle pin of the dial - this will be the value of the fixed resistor which you need to connect to the left and middle hole on the circuit board.
Now measure the resistance between middle and right pin on the dial - this will be the value of the fixed resistor which will be connected to the middle and right hole on the circuit board.

Now you need to get resistors which have the values that you've measured and solder them in place of a bad dial.

It is likely that the measured value will differ from the standard fixed resistor values. To achieve the exact measured value, you can connect two or more fixed resistors in series, just make sure that the added value of the fixed resistors for each side is the same as the measured value on each side of the dial.

Now you need to solder the fixed resistors to the circuit board and the modification is complete.

If you actually decide to do this modification and you're unsure about anything, just post me some feedback, i'll be glad to help.

Anyway, hopefully it is just a desoldered pin that you need to reflux.

Regards,

Triarcuate

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