Restoring a JBL SA-600

IsakAlexander · 2nd January 2012, 03:36 PM

I´ve just started on this, ordered new caps and transistor sockets yesterday.
My problem is finding new replacement transistors as someone have done a really poor repair previously. I understand MJ4502/MJ802 were used but I´m missing all of the smaller one´s and nowhere is it mentioned what they are.
Any suggestions for replacements??

IsakAlexander · 2nd January 2012, 06:04 PM

MJ15003/4 output devices and 2N3583, 2N6211 drivers??

Orit · 3rd January 2012, 12:32 PM

Interesting page for you in a Netherlands forum:
Totale restauratie van een JBL SA-600 versterker uit 1966
(Totale restauratie van een JBL SA-600 versterker uit 1966)

IsakAlexander · 11th January 2012, 04:50 PM

Which TO-66 cased drivers would be the best choice for MJ802/4502 in this T-circuit?

sakis · 11th January 2012, 05:50 PM

1-find a schematic ...
2- read this vintage amplifier repair/upgrade manual
3- you have to spend money and time
4-dont even know if worth but in the end it could be a nice project ( still there is a holly lot to be done )

i only have a basic schematic of it so email me if it helps

kind regards
sakis

2nd January 2012, 03:36 PM	#1
IsakAlexander diyAudio Member Join Date: Sep 2006	Restoring a JBL SA-600 I´ve just started on this, ordered new caps and transistor sockets yesterday. My problem is finding new replacement transistors as someone have done a really poor repair previously. I understand MJ4502/MJ802 were used but I´m missing all of the smaller one´s and nowhere is it mentioned what they are. Any suggestions for replacements??

11th January 2012, 05:50 PM	#5
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	1-find a schematic ... 2- read this vintage amplifier repair/upgrade manual 3- you have to spend money and time 4-dont even know if worth but in the end it could be a nice project ( still there is a holly lot to be done ) i only have a basic schematic of it so email me if it helps kind regards sakis __________________ SERVICE ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

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2nd January 2012, 06:04 PM	#2
IsakAlexander diyAudio Member Join Date: Sep 2006	MJ15003/4 output devices and 2N3583, 2N6211 drivers??

3rd January 2012, 12:32 PM	#3
Orit diyAudio Member Join Date: Feb 2007 Location: Milano	Interesting page for you in a Netherlands forum: Totale restauratie van een JBL SA-600 versterker uit 1966 (Totale restauratie van een JBL SA-600 versterker uit 1966)

11th January 2012, 04:50 PM	#4
IsakAlexander diyAudio Member Join Date: Sep 2006	Which TO-66 cased drivers would be the best choice for MJ802/4502 in this T-circuit?

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