need a source and information on a 288-5336 audio amplifier

I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a listing for this anywhere. Can anyone help? Thanks, Lenny

 

[M Philbrook]

In article <c2293d2a-8564-4a03-bcaa-56187555f41e@googlegroups.com>,
captainvideo462009@gmail.com says...

I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a
listing for this anywhere. Can anyone help? Thanks, Lenny

are these DIP ic's ? and if so, what pin count are they
and do they have the middle legs bonded together from the
package?

I can give you a couple of numbers to look at to
comparson.

LM380, LM377

etc..
Spregue made some direct replacements etc..

Jamie

 

[N_Cook]

On 13/12/2015 00:25, captainvideo462009@gmail.com wrote:

I have two audio amplifier modules I scrapped out of an 8 track player many years ago. I use these to amplify the headphone outputs of two PRC77 military radios tuned to six meters, so that I can monitor on speaker. These modules fit perfectly so I need to retain them if possible. The modules put out about 4 watts each. One module is shorted and it appears to be a bad amplifier chip. There are two output IC's bearing the above number in each module. I can't find a listing for this anywhere. Can anyone help? Thanks, Lenny

Take some readings off the pins of the working one, while it still is,
and try repinning some modern replacement to the shorted one.
On removing that , maybe some other number on the underside of it.