[Jukebox-list] Seeburg TSA1 resistors and muting relay question

[Ray Finch]

Well it may not _look_ like the original, but electrically a modern 
replacement part will work just fine as long as the values all match up. 
In fact, as long as it doesn't ruin the overall look of things, I'd rather 
use new replacement parts when making a repair then use a part that is 40 
years old.

One good example of this is replacing a selenium rectifier with a modern 
silicon bridge rectifier.  Things look different but the modern 
replacement will last a very long time.

Two very good parts suppliers are Digikey (http://www.digikey.com) and 
Allied Electronics (http://www.alliedelec.com).  I have use both of these 
for years for replacement parts and parts for projects.

Digikey does have the 0.75 ohm, 10W resistor (5% rather than 10%, but a 
tighter tolerance doesn't hurt - at the digikey site, search on "0.75 ohm 
10W").  Like I say, it may look different from the original part but as 
long as the values match up, it should work just fine.


Ray Finch



On Thu, 14 Jun 2007, Jjmscf at aol.com wrote:

> I pulled the amp from one of LPC480s I have in the shed to test out in the
> house but I discovered a couple of missing resistors.Both are supposed to be.75
> ohm 5 watt 10%. Looking at some catalogs that value is skipped over. Anybody
> have the resistors or possibly 2 removed from a junker amp or know where to get
> this value? It's in the output circuit so value is pretty critical there I
> would imagine. The transistors check good so I suspect it was simply robbed to
> fix another amp. The other LPC 480 amp was missing the main filter capacitor
> but it worked fine after I installed a new capacitor.
>
> 1 question I have that Ron may know is this appears to be an early TSA1 amp.
> The code is CO23 where the LPC1 amp and other TSA1 from the other 480 codes
> start with E and F.The consolette connector is different.On this one the mute
> relay is not inside that round metal can.I thought it was a replacement but it's
> the original style relay and only has 1 center screw. No other screw holes
> have ever been used or any sign the can was ever there. Was the can added on
> later amps to keep dirt out of the relay or was it found that it needed sheilding
> as the can is metal ?
> J.C.
>
>
>
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