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???
08/29/12 17:00
Modified:
  08/29/12 17:03

Read: 636 times


 
Msg Score: +1
 +1 Informative
#188194 - Perhaps Current Limiting
Responding to: Oliver Sedlacek's previous message
The manual I was able to locate is for the MKII located:

http://www.thevalvepage.com/servdata/...arnell.htm

click on the e350.pdf

this is a direct link to the download page, but may not allow you to enter a security code.

http://www.thevalvepage.com/download/...ir=farnell

The schematic at the bottom of that manual happens to have check points for voltages ( hand written ).

There seems to be 4 fuses. The most obvious case is to check the fuses and make sure they are functional. If they are not, why did they open?

Power supplies drop in voltage purely from current limiting sometimes, and there could be nothing wrong just configured incorrectly or drawing too much current into a load.

If need be, start checking the voltages from the beginning stages up to the end stages.

List of 20 messages in thread
TopicAuthorDate
Repairing old kit, any advice?      Oliver Sedlacek      08/29/12 13:31      
   "Suddenly" ?      Andy Neil      08/29/12 14:17      
   Perhaps Current Limiting        Justin Fontes      08/29/12 17:00      
      More info      Oliver Sedlacek      08/30/12 06:18      
         for those of us that ...      Erik Malund      08/30/12 07:01      
            Voltage-controlled      Per Westermark      08/30/12 09:07      
          pentodes? Tubes? (Valves?)      Neil Kurzman      08/30/12 17:21      
            Tubes as in Mullard EL34s      Oliver Sedlacek      08/31/12 01:03      
               One last bit of advice        Justin Fontes      09/04/12 11:30      
         Old electrolytics      Oliver Sedlacek      09/05/12 04:30      
            well, in lieu of a scope ....      Erik Malund      09/05/12 07:12      
            Last      Per Westermark      09/05/12 08:26      
            The problem isn't with the "old gear" ...       Richard Erlacher      09/05/12 09:57      
            Good hunch, then      Andy Neil      09/05/12 12:38      
               Update, not the electrolytic..      Oliver Sedlacek      09/07/12 02:01      
                  Google      Neil Kurzman      09/07/12 11:37      
                  ebay      Mahmood Elnasser      09/07/12 12:13      
                     Or just the Mullard      Neil Kurzman      09/07/12 13:54      
                  Anyone got an EL34?      Andy Neil      09/07/12 13:49      
                     Here you go...      Andy Neil      09/07/12 15:31      

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