From: Stu Greene 
Subject: RE: [drakelist] L4-PS R12 burned - .825 ohm 2W resistor on pin
  6 of cable harness


Stu Greene  made an utterence to the drakelist gang
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At 04:52 PM 12/6/2004, Gene McCalmont wrote:

>"Gene McCalmont"  made an utterence to
the drakelist gang
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>  I have another L-4B, left at my door in a wicker basket
>with a note from its previous owner, which is suffering from a blown R12. I
>had not been into this PS as yet, but opened it up just a few moments ago.
>Yup... Thar she blows (no pun intended)... A wirewound
"flameproof" just as
>Garey had said and with the same markings (best I can tell), so I believe it
>was original. Interesting. However, I fear that this owner was not so lucky
>and it looks like one or more of the carbon bleeder resistors have cooked. I
>am somewhat reluctant to look further into this... before Christmas!

If the B+ cord from the power supply to the amp had not been 
disconnected,  that resistor is going West together with one or both of the 
25K ohm bleeder resistors.  More than likely the diode bank on the side 
where the bleeder resistor blew will have to be replaced.  This is spelled 
out in the operator's manual.

You have a bit of work awaiting.

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