Blose speaker amp...

[c4koh]

Has anybody has one of these spare, it's for a '91 (but I think all the 84-96 amps should be the same)?

Otherwise, I'm looking to get a pair off ebay:

http://cgi.ebay.com/ebaymotors/ws/eBa

(although I only need 1 now, I'm sure a spare will come in handy...).

*IF* there's no spares, if anybody wants me to add to that order ($74 seems a good price), let me know - there's 4 available.

[c4koh]

They won't ship out of the US (does annoy me little bit - it's not like the UK (yet!) is North Korea...) but anyway...

:-(

[eddo]

These guys can help with your shipping, they have a New York office for internal US then they ship to the UK.www.moving-parts.com/theconcept.htm
Ed

[c4koh]

Ed,

Yes -I've contacted Steve to see about that. Eckler's are doing them at $129, so hopefully a saving can be made.

Did anybody want me to order one for them, while I'm at it, as well?

[franv8]

They did switch over, I think there were break points for the amps at 86-87 and also I believe they're very different for the facelifted dash cars, i.e. post 90 C4's.

There is some things written about these on the interweb, can't remmeber where though....

[Mike Mercury]

FYI; most of these amps can be easliy repaired by replacing all the electrolytic capacitors on the amplifier board (assuming the board is not burnt).

Edited by Mike Mercury on Wednesday 6th September 18:22

[franv8]

Mike - I need to do one of mine, but thus far have been too lazy to remove it - how many capacitors are on the board?

[Mike Mercury]

franv8 said:

Mike - I need to do one of mine, but thus far have been too lazy to remove it - how many capacitors are on the board?

It's been awhile, but I believe there are 6. They are kinda small and it's tough to find replacements with the volt/mfd ratings (that are physically small enough).

When these capicators start to go bad, they cause the amplifier to start high-frequency oscillations. At this point they either don't put out any sound - or it's distorted sound.

This "high freq oscillatibg" generates a lot of heat and will eventually destroy the circuit board material. I imagine I repaired about 10 of them in the past couple years. And 2 of the 10 ... the circuit board was too "cooked" to attempt any repair.

Here is a drawing of a bench test setup I fashioned for the repairs: