Look at the schematics legend. for the resistor type identification chart. Lower left side grid F-G / 1.No.... 4.7KΩ 1/4 watt probably flameproof carbon film. Not a fusible per say.
Post a photo of it..
The chart indicates a carbon film resistorNo it’s laying flatView attachment 1131971
carbon film --- 1/4 wattNo it’s laying flatView attachment 1131971
This tip was only for fusibles with given resistance and current ie milliamps.. Thats it..End of story.. I don't see any so far in the A-700 schematic.Trying to determine what wattage resistor to get to replace R271, View attachment 1131939
4.7k ohm
70.7v
.1 watt
I used the voltage and resistance indicated on the schematic did the math using the calc and cane up with .1
Do I order a .1 watt or is there a rule to follow?
If there not listed .. Carbon film 1/4 watt.Apparently some resistors aren’t listed on the parts list for this amp. Thanks for the help
That's just a normal carbon film 1/4w.
Color code matches 4.7kΩ as you said.
You can use this.
The wattage isn't too important for resistors other than the fusible/flameproof ones (where it's more critical).
For the normal carbon film resistors as long as the wattage is equal or greater (and the dimensions are the same) you're good to go.
This tip was only for fusibles with given resistance and current .. Thats it..End of story.. I don't see any so far in the A-700 schematic.
Whats wrong with R271 ?
Good idea.The corrosion from the old glue is pretty bad on that one
The things you mention about the flickering lamps is pretty abnormal, I'd have some BAV-21 diodes handy in case the single one on the rectifier/fuse board has gone bad. I had a similar issue with an A-720 in this thread, but your issue sounds different again so may not be the same thin
You can use this for your 22Ω (fusible, flameproof). It's 1/3W instead of 1/4W but close enough.
Everything else sounds good.