Traynor bloc40b

[DWBUZZ]

Hi, I'm looking for the schematic for a Traynor Bloc40B. Thanks

[Jazz P Bass]

Looks like a pretty simple amp.
What is wrong with it?
Have you tried contacting Yorkville?
Yorkville Sound USA
4625 Witmer Industrial Estate
Niagara Falls, NY
USA 14305
Phone (716) 297-2920
Fax (716) 297-3689

[vintagekiki]

Links to Traynor & Yorkville schematics

http://traynoramps.com/products

http://traynoramps.com/support/manuals_spec_sheets

http://traynoramps.com/downloads/servman/smdnb400.pdf

http://www.yorkville.com/

http://www.yorkville.com/resources/product_documents

http://www.yorkville.com/downloads/servman/

http://www.harpamps.com/schematics_archive/TRAYNOR/index.html

http://www.lynx.bc.ca/~jc/traynorSchmArchive.html

http://elektrotanya.com/?q=showresult&what=Traynor

http://elektrotanya.com/?q=showresult&what=Yorkville

http://elektrotanya.com/yorkville_bloc50-100g.pdf/download.html

http://elektrotanya.com/yorkville_bloc150a_sch.gif/download.html

http://elektrotanya.com/yorkville_bloc150b_sch.gif/download.html

http://diagramasde.com/audio/Yorkville

http://www.schematicsunlimited.com/y/yorkville/

http://www.prowessamplifiers.com/schematics/traynor/

http://www.schematics.ca/modules/PDdownloads/viewcat.php?cid=56

http://www.manualslib.com/brand/traynor/

http://www.manualslib.com/brand/yorkville/

http://www.webphix.com/schematic%20heaven/www.schematicheaven.com/bargainbin.html

http://www.eserviceinfo.com/index.php?what=search2&searchstring=traynor

http://fileshare.eshop.bg/index.php?what=search2&searchstring=YORKVILLE

http://new.poblizo.com/index.php?what=search2&searchstring=yorkville

[Jazz P Bass]

Thanks VK.
Missed that when I went searching.
Cool.
It has rail switching circuitry.
Not as simple as it seemed.

[g1]

It has rail switching circuitry.
Not as simple as it seemed.

That's the dynabloc 400 . The Bloc40B is much more basic.
Check inside, yorkville often stuck the schematic inside the chassis.

[g1]

BLOC 40B.pdf

If you need to replace output transistors, use MJH11017 and MJH11018.

[J M Fahey]

Agree and add: maybe TIP142/147 will be much easier to find (and cheaper)

Any of those mentioned in this thread is overkill in a 40W amp anyway.

[g1]

Agree and add: maybe TIP142/147 will be much easier to find (and cheaper)

This could very well be true, I only mentioned the MJH11017 & MJH11018 because they are the "official" subs recommended by the factory. They used the BDV's in many products, some of which are much higher power.

[J M Fahey]

Agree.
Factories buy in bulk, so they pay much less than us and in case you have a roomful, why not use them anywhere?

Marshall used the same MJ2901/3001 an relatively expensive metallic TO3 Darlington pair, from 100W amps to the tiny Lead 12, which is absolute overkill.
Of course, it doesn't hurt