Question about Philco Audio Players & Recorders
Have a resistor burnt near the 7f8 tube
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Posted on Jan 02, 2017
Unfortunately, most consumer devices to not have freely available schematics. Plus, the chances of the resistor in question being the only faulty part is low, as something must have caused the resistor to be overpowered.
Posted on Mar 07, 2008
RK62 is a 2.2ohm 1 watt metal oxide resistor hitachi part number 0700054M any 2.2ohm 1 watt resistor will work although it does have to be metal oxide(flame resistant) for safety purposes.
Posted on Mar 24, 2008
SOURCE: burnt out resistor
I'm in the same fix. I learnt that a new pcb is £68 so had the pcb repaired but after the machine has warmed up it now cuts in and out. Like you, I haven't been able to locate a wiring diagram so am trying a last minute lash-up before binning the machine:
A friend suggested that since we all seem to only operate the cleaner on full power I should connect the on/off switch direct to the motor bypassing the rheostat and the pcb as in old fashioned machines.
Posted on Jul 07, 2009
Can not believe NO ONE could answer this.
The R1 resistor basically drops the 9V to around 5V for charging the battery pack. The resistor is a 10 ohm , 2 watt resistor. The other resistor is 220 ohm. This only limits the current to the LED.
The 10 ohm resistor burnt because the battery pack was left to sit too long without use and charging. So the cells shorted causing excessive current through the resistor when you attempted to charge the batteries.
After replacing the resistor, you will need to replace the battery pack before charging. Otherwise, you'll just burn the resistor again.
Posted on Dec 23, 2010
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