I have a Peavey Bass Combo Mark III series. Model number on the back is 115 BW Combo. Serial number 386411. Can you help me determine the age and possibly a value. My Dad used this for years. Thanks

SOURCE: Peavey 115 Low hum Low volume from input

The preamp section has a problem. It could be anything in the preamp but is OFTEN the input jack itself. They take a lot of abuse.

Also the insert jack contacts that forward the preamp to the power amp if no external FX are used can go bad.

Additional things are circuit board cracks caused by rough handling and also controls that have had the knobs mashed in which can destroy the potentiometers they are connected to.

SOURCE: Yamaha BB450's year (bass)

supported here and those formats offer no clue as to where these guitars where made.
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The serial numbers repeat evry 10 years... you have to know what decade is likely thenfrom the Yamaha wizard: Your guitar was made on
January 15th, 1985, 1995
or 2005
Production Number: 3

SOURCE: Yamaha FG110's year (acoustic guitar) and BB450's year (bass)

According to yamaha's site, that's an invalid serial number??!!??

I would guess that might be the date code.

Other sites report 5, 6 and 8 "digit only" serial numbers.

Nothing for 7 numbers.

If i had to guess, the earliest...1971
Hope this helps.

SOURCE: wurlitzer electric organ model 630 TA serial

Kontakt:[email protected] they have all parts on stock as well service manuals, this model is very unique it has an value!not a money value, keep it in shape... I owne an 625ta white, it sounds better as the 950 and also better as the 625 spinet model, i don't know why...Jimmy Smith UK recorded an superb Lp"tommorows sound today"

SOURCE: there are some burnt carbon resistors beyond

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.