5f1 pt idling on htrs alone unhealthy?
Ckt has secondary ht ac out on open ckt switch, equiv standby.
Question is whether htrs alone drawing pt energy suffices enough load to not detriment pt on inadequate loading. Realize ht pt secondary switch is dpdt center off, as there's two secondary ht winding taps, one is 300, the next 330, dunno why, but both produce sound, 330 cleaner, 5f1 chromed chassis china diy kit
Ckt has secondary ht ac out on open ckt switch, equiv standby.
Question is whether htrs alone drawing pt energy suffices enough load to not detriment pt on inadequate loading. Realize ht pt secondary switch is dpdt center off, as there's two secondary ht winding taps, one is 300, the next 330, dunno why, but both produce sound, 330 cleaner, 5f1 chromed chassis china diy kit
Here is the 5F1 schematic for anyone needing it:
http://bmamps.com/Schematics/fender/champ_5f1_schem.pdf
http://bmamps.com/Schematics/fender/champ_5f1_schem.pdf
You will get offered answers a lot faster if you use English and not text speak. Most experienced engineers have no idea what text speak means!
Comp kybd cn typ lk tht 2. ? U pst w/BS phn kbd? U spnd 2 mch $$ 4 svc now must uz. 2 bad 4U butt it hertz our IIs.
It's also in the wrong place, this clearly belongs in Instruments and Amps.
I'd say writing in clear English could only help, best I can figure you are asking if running the transformer with only heaters drawing current from it was bad for it. The answer to that is no, not a problem.
found ac htr 6.3 windings earthed somehow
5y3 htr windings isolated from earth
But ecc83/6v6 htr windings is earthed, why?
Did pt unisolate 6.3 windings over time or this condition is intentionally designed of pt?
I pulled bottles out but still 6.3 windings earthed.
Trouble?
Based on respondents idiosyncrasies conformists communication, there is consensus from the white collared prima donnas to follow suit.
5y3 htr windings isolated from earth
But ecc83/6v6 htr windings is earthed, why?
Did pt unisolate 6.3 windings over time or this condition is intentionally designed of pt?
I pulled bottles out but still 6.3 windings earthed.
Trouble?
Based on respondents idiosyncrasies conformists communication, there is consensus from the white collared prima donnas to follow suit.
Why not switch over to your car's voice commanded text message reader and response app instead of trying to input text to your G-S3 while you're driving? And switch the translator into english from "hamster cheeks chock full of seeds," mode.
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brain cheaper than lithium ion repetitive discharging recharging
Its cheaper to communicate as is, machines don't cry, humans do
Ct of 6.3 htr windings is earthed! Pt label indicated ct of windings which is lugged to family earth stud
Its cheaper to communicate as is, machines don't cry, humans do
Ct of 6.3 htr windings is earthed! Pt label indicated ct of windings which is lugged to family earth stud
The heaters for the ECC83 / 6V6 should be earthed (at one point only). This is to reduce hum and buzz from those heaters entering the audio signal.
By the way, I disagree, brain is more expensive than lithium-ion charging. 🙂
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5Y3 heaters are isolated from earth because they are electrically the cathode of the tube, and will have the full B+ voltage on them. Grounding that would ground out your high voltage supply.
Then htr wiring for 5y3 and 6v6 and ecc83 are fine as originally built
Gotta chk house outlet being reported by ground fault detector surge protector.
Maybe the ghecko lizard is bridged in the house outlet, or it hatching eggs liquidous release?
There was an electronic burning smell, attributed either to said outlet, or, rejuvenator contact caig sprayed on pt exterior rust (slight rust appearing laminates, owed to impinging propeller mounted directly onto pt bell (increased water vapor per unit time exposure).
There is absolutely no scent of electronic burning smell, all discussed suspects.
And, could not repeat this electronic burning smell, all conditions recreated exactly.
Btw, axial ac fan is bridged by 222 polypropylene foil cap. Fan secured to bell using neoprene soundshort isolation ( chosen wisely to combat sound short).
Dang where did that electronic burning smell come out from?
It occurred upon ht engagement, after excessive prolonged htrs engaged (band members talk too much like women, so htrs are prolonged unduly).
This effectively is seen by primary windings pt.
Gotta chk house outlet being reported by ground fault detector surge protector.
Maybe the ghecko lizard is bridged in the house outlet, or it hatching eggs liquidous release?
There was an electronic burning smell, attributed either to said outlet, or, rejuvenator contact caig sprayed on pt exterior rust (slight rust appearing laminates, owed to impinging propeller mounted directly onto pt bell (increased water vapor per unit time exposure).
There is absolutely no scent of electronic burning smell, all discussed suspects.
And, could not repeat this electronic burning smell, all conditions recreated exactly.
Btw, axial ac fan is bridged by 222 polypropylene foil cap. Fan secured to bell using neoprene soundshort isolation ( chosen wisely to combat sound short).
Dang where did that electronic burning smell come out from?
It occurred upon ht engagement, after excessive prolonged htrs engaged (band members talk too much like women, so htrs are prolonged unduly).
This effectively is seen by primary windings pt.
here are pics requested
ftp://cchftp1.honolulu.gov/5F1_Hum.pdf
login: cchftpuser
password: cchftpuser
ftp://cchftp1.honolulu.gov/5F1_Hum.pdf
login: cchftpuser
password: cchftpuser
5f1 static sounds, not crackling, but light static sound
I am puzzled by this brand new anomaly.
After about half hour of demanded musical amplification, about third dialed up both gain and mv, the static noise manifested, so deenergize and examine why.
Could not locate why, except for very slight phenolic base looseness of 6v6, likely from thermal cycling and human hand removing reinstalling 6v6 to socket porcelain.
But 5f1 plays so phenolic looseness may not be culprit.
Where do I examine? Do I suspect each bottle individually, hence replace one at a time to isolate culprit?
All bottles test perfect, on tube tester b&k707, to which stats are written dated on the bottle, that blue painter's masking tape. I just cringe the ot or pt might be the static noise source. The other potential culprit may be the styrene hipass 221caps bridging both gain and mv a1meg pots, they're rated only at 50 and 100 vdc, 100 assigned to mv. I've tested them good out of ckt months ago, though their voltage duty may need to be increased being so little capacitance. The ac thru these styrenes may have begun to perforate dielectric styrene without being able to confirm deterioration by fluke79 alone.
Any guidance would be appreciated. I can start out by injecting 12rms vac 1k tone into front end, pots at lunch, and view waveform through audio stages, however I could be fooled if static is derived from pt ot candidates. The telecaster may also be candidate so I need to check what could create static. November chronic rains plagues electronics, including line power household outlets built in the sixties. The bass guitarist experienced zero amplifier anomalies last evening during playing, but he was assigned to a different line outlet.
I am puzzled by this brand new anomaly.
After about half hour of demanded musical amplification, about third dialed up both gain and mv, the static noise manifested, so deenergize and examine why.
Could not locate why, except for very slight phenolic base looseness of 6v6, likely from thermal cycling and human hand removing reinstalling 6v6 to socket porcelain.
But 5f1 plays so phenolic looseness may not be culprit.
Where do I examine? Do I suspect each bottle individually, hence replace one at a time to isolate culprit?
All bottles test perfect, on tube tester b&k707, to which stats are written dated on the bottle, that blue painter's masking tape. I just cringe the ot or pt might be the static noise source. The other potential culprit may be the styrene hipass 221caps bridging both gain and mv a1meg pots, they're rated only at 50 and 100 vdc, 100 assigned to mv. I've tested them good out of ckt months ago, though their voltage duty may need to be increased being so little capacitance. The ac thru these styrenes may have begun to perforate dielectric styrene without being able to confirm deterioration by fluke79 alone.
Any guidance would be appreciated. I can start out by injecting 12rms vac 1k tone into front end, pots at lunch, and view waveform through audio stages, however I could be fooled if static is derived from pt ot candidates. The telecaster may also be candidate so I need to check what could create static. November chronic rains plagues electronics, including line power household outlets built in the sixties. The bass guitarist experienced zero amplifier anomalies last evening during playing, but he was assigned to a different line outlet.
Well, don't just guess that it might be this part or that part.
Isolate the problem.
Does it make the noise with nothing plugged into the input? Or only with instrument? If only with instrument, does turning the guitar volume control to zero stop it?
Unless your tube tester specifically tests for noise, it won't help you.
If you built this with new parts, none of them are deteriorating. A meter will measure value of a cap, but will tell you little or nothing about leakage or noise. Only circuit voltages applied to caps will do that.
This is only a two tube amp. Does turning its volume down turn the noise down or does it stay up?
One can ground a cap (I use a 0.047uf 630v because I have lots), and from the other end a clip wire touched to the signal path will shunt the signal, so you can tell at any point by AC grounding whether the noise is passing through that point.
Isolate the problem.
Does it make the noise with nothing plugged into the input? Or only with instrument? If only with instrument, does turning the guitar volume control to zero stop it?
Unless your tube tester specifically tests for noise, it won't help you.
If you built this with new parts, none of them are deteriorating. A meter will measure value of a cap, but will tell you little or nothing about leakage or noise. Only circuit voltages applied to caps will do that.
This is only a two tube amp. Does turning its volume down turn the noise down or does it stay up?
One can ground a cap (I use a 0.047uf 630v because I have lots), and from the other end a clip wire touched to the signal path will shunt the signal, so you can tell at any point by AC grounding whether the noise is passing through that point.
Removed both A1Meg pot hipass styrene 221 caps, static 95% gone but speaker sounds blanketted.
Where's the other 5% remainder static coming from?
There are two coupling mylar caps 223 630vdc blocking dc, these could have been voltage punctured too owing to the permissible hipass 221 styrene cap that furthers energy transfer through the coupling mylar 223 caps.
I didn't realize hipass caps actually endorse furthered energy transfer through the accomodating circuit which in essence will subject furthered stress compared against hipass absence.
I will reinstall hipass 500vdc silver mica 221 to both A1Meg pots after identifying the remainder 5% static noise. Amp kit diy built new parts included complete year 2012 so parts are 3 yrs old, kit furnished tubes called shuguang all test brand new now yr 2015, so this does reveal hardly energized since built, unless this build is conservative thereby extending tube service life prolongation.
Where's the other 5% remainder static coming from?
There are two coupling mylar caps 223 630vdc blocking dc, these could have been voltage punctured too owing to the permissible hipass 221 styrene cap that furthers energy transfer through the coupling mylar 223 caps.
I didn't realize hipass caps actually endorse furthered energy transfer through the accomodating circuit which in essence will subject furthered stress compared against hipass absence.
I will reinstall hipass 500vdc silver mica 221 to both A1Meg pots after identifying the remainder 5% static noise. Amp kit diy built new parts included complete year 2012 so parts are 3 yrs old, kit furnished tubes called shuguang all test brand new now yr 2015, so this does reveal hardly energized since built, unless this build is conservative thereby extending tube service life prolongation.
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