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Show posts MenuQuote from: Enzo on June 30, 2015, 08:49:43 PM
Any control that affects the hum is AFTER the source of the hum. So whatever stage is offending, it is before the EQ. Since you report the gain controls has an effect, that tends to localize the problem to the first stage - the three transistors just to the right of the input jacks. So do look at the voltages.
Quote from: g1 on June 30, 2015, 11:51:38 AMI guess I will just have to be disappointed and you will have to carry on in the mistaken belief it is a test device.Quote from: LateDev on June 30, 2015, 11:23:21 AMThat is just plain wrong.
You should never use the bulb method as part of any test
you're gonna be real disappointed around here .
Quote from: ilyaa on June 30, 2015, 03:28:04 PMThat is a relief then. Am I to understand this is a single filter unit, or is it a double cap in a single can. Either way you should replace the entire filter, getting 2 caps and a resistor.
unhooked the PT from the RC filter - and no tubes in the amp:
transformer side of the main filter cap shows short to ground.....boooo
its the can cap, for sure. all the other leads of the can (its 20/20 and 40/40) seem fine. would i be okay to just interject a separate large filter cap where that first section of the can cap is supposed to go?? think im gonna try that - seems a shame to replace the whole can if only of the sections is shorted, unless that means its time to toss it.....
Quote from: Enzo on June 29, 2015, 11:55:55 PMTrue, I must have misread the heater part, and merely took it that there was no heater, as he had said there were no Voltages around the circuit.
I don't see where he said he had no heater voltage.
If the power transformer had melted in any way, then it ought not matter if the rectifier was installed or not. Shorted turns would draw current and light his bulb limiter with or without the rectifier.
QuoteNot at all, just a simple line with a small explanation, to help those who find this a little over their heads, would help clarify, otherwise statements like it will only give > .1W sounds condescending
Does everything posted here require a full page filled up with formulas?
Quote from: J M Fahey on June 30, 2015, 06:58:24 AMNow LateDev is attempting to change the rules in the middle of a game by introducing the back/old stock card ... but his original suggestion was, and I hate having to quote his own words:
QuoteAs far as the transformers are concerned, if you got to Hammond or Sowter, or indeed any company that produces quality transformers for audio, they will be able to supply whatever you want.Am I missing something?
Quote from: J M Fahey on June 30, 2015, 01:17:42 AM:duh
I hate saying "I told you so"" but can't avoid it: