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Adam <adamg@pobox.comNOSPAM>: Mar 18 05:57AM > Seems to be a rare beast, any pointers to a schematic ?   Is this the one?   https://peavey.com/forum/download/file.php?id=14455   -- Adam

"Dave M" <dgminala@mediacombb.net>: Mar 18 09:23AM -0500 N_Cook wrote: > the FET, which will be the next thing to investigate, if no schematic > found. When last powered I did not think to see if the footswitch > action gated the opamp o/p. Any other ideas?     Send an email to Peavy at parts@peavey.com or customerservice@peavey.com and ask if they can send you a schematic for your amp. They're usually quick to respond. Give all the nameplate numbers on the amp to get the correct schematic. They are (in)famous for making engineering changes to them and not changing the model or Rev level. Dave M

jurb6006@gmail.com: Mar 18 12:55AM -0700 >"In fact, since I'm one of those people who commit no crimes, I feel safer with them about. "   Remember the old saying - when seconds count, the police are only minutes away.   Nonetheless, I have no problems with cameras. Even though I am pretty much lawless I have respect for other people and would never rob anyone or anything like that. The only thing I do lately is smoke pot, and they do seem to be lax on that these days, though I heard this particular town likes to get tough on it. If you got cameras that can see into my garage then more power to ya, and you can house me and feed me for as long as you like because you ain't getting any money. Plus I have a shitload of maladies that need looked at by a doctor.   The cameras won't save you. There is a guy sitting there monitoring maybe fifty of them or whatever and he has to catch what is happening and then to stop a crime has to get Scotty to transport some cops to the scene, otherwise they are dispatched in a car from who know how far away.   But if you do get mugged or something at least there is a record and they might be more able to catch the perp and put him away. It is a two edged sword. You lose privacy, but really if you think about it, you are in public. When they go snooping around on people's property, that bothers me.   Cars also now have a "black box" that'll tell about what went on right before an accident. I am not really against that because if someone is driving like an asshole they need to be, well whatever. You can't do what we used to do in the 1970s, like go 100 MPH. (there is one place in Cleveland where you can get away with that, well a couple actually)   There was some talk of disabling cellphones if moving more than 20 MPH or something, but what of the passengers ? They say driving while talking on the phone is as bad as drunk driving. Many cities have laws against it now but they are hard to enforce. Plus none of these laws take into account the person driving. Some people can drink a fifth of vodka and drive just fine, I have known such people. Others can't drive after two beers, I have known such people.   One of the things I am against is electric power steering. I know electronics. I can envision a transistor shorting out and taking the wheel all the way right or left. It is a bad thing, give me the old hydraulic system. So now they got cars that can steer if you veer out of your lane, that is ridiculous.   They got new table saws now that will stop the blade immediately if it detects flesh, somehow. Now let's teach the kids on one of these and one day they have to work with a saw without this feature and cut their hands off.   Like cars, we had no airbags. When we hit something the steering wheel pounded into our chest, OUCH. That'll learnya. Next time look where you are going !   The removal of all consequences of one's actions is not a good thing. People will not learn by their mistakes. When I was young, a (very) few times I ran out of gas and had to walk miles to get some. I learned to put gas in the car. Now people just call AAA on their cellphone and a truck comes out with gas.   Two edged sword this technology.

tlvp <mPiOsUcB.EtLlLvEp@att.net>: Mar 17 09:33PM -0400 On Thu, 16 Mar 2017 14:57:53 +0200, Micky wrote:     > Later I was able to recharge the battery fully, use some and recharge > over and over up until now. Using a different cable. But if the > cable were bad, how to account for the first paragraph??   Of all the answers you've received this far, none proposes as candidate explanation what I'm about to suggest, which is: the phone's charge circuitry simply failed accurately to detect the new state the phone entered once the call ended, the charging function simply stopped, and the charge level never increased beyond the 77% you saw.   Once you turned the phone off and on again (or hibernated and reawakened it), the state change became more obvious, and charging proceeded normally, recharging fully.   I've encountered similar "losing track of the phone's state" events with an old WinMo Motorola handset (a Q9m). Switching the phone off and on again resets everything back to normal. Kinda like "stty sane" in Unix/Linux :-).   HTH, though YMMV. Cheers, -- tlvp -- Avant de repondre, jeter la poubelle, SVP.

makolber@yahoo.com: Mar 17 10:32AM -0700 > What is the function of the JFET, Q553?   It looks like an audio switch that connects the L and R channels together in some mode controlled by the Mode 2 signal, for some reason. Is there a mono mode?   I'd disconnect this first to troubleshoot the other problem, it may be related or not.   Once you have the two channels isolated from each other, it may be easier to trace the distortion problem.   Mark

makolber@yahoo.com: Mar 17 10:40AM -0700 > I'd disconnect this first to troubleshoot the other problem, it may be related or not.   > Once you have the two channels isolated from each other, it may be easier to trace the distortion problem.   > Mark   also looks like a design error to me re Q551 and Q552. It is hard to follow the way they are drawing upside down from how we normally see this circuit, but there should be a pullup resistor on Q552 like 10K from base to emmitter to ensure Q552 is cutoff when Q551 is off. There may be enough leakage when it gets warm that Q552 starts to turn on when it should not. That may be the cause of the distortion?   Mark

"David Farber" <farberbear.unspam@aol.com>: Mar 17 12:35PM -0700 > Once you have the two channels isolated from each other, it may be > easier to trace the distortion problem.   > Mark   There is no mono mode that I can see. I do not have the remote control. Maybe it could be activated in certain surround modes? (This receiver has Pro Logic surround sound.)   Are you saying I should just remove the JFET, Q553, to isolate left from right and see what happens?   Thanks for your reply. --   David Farber Los Osos, CA

"David Farber" <farberbear.unspam@aol.com>: Mar 17 12:54PM -0700 > channels.   > Let us know how you make out.   > Dan   Hi Dan,   I powered it on again and after about 15 minutes, both channels were distorted. The signal going in and out of IC431 is fine. Adjusting the volume does not affect the distortion. The top half of the wave is clipped. I did notice that both dual op-amps, IC431 and IC503 are inline 4580's. I swapped them to see if that made a difference but the distortion stayed the same after warm up at IC503. Inverting input pins 2 and 6 were distorted while noninverting pins 3 and 5 were not distorted.   Thanks for your reply. --   David Farber Los Osos, CA

Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: Mar 18 07:19AM +1100 On 17/03/2017 10:20 PM, Phil Allison wrote:   >> Hmmm, but isn't that receiver from the late 80's, early 90's?   >> Not sure the "lead free solder" problems would apply.   > ** The JVC RX807V is a thoroughly modern, home theatre, multi channel nightmare.   **Nah, it's ancient history in the world of home cinema. A nightmare? Certainly. Horrible thing. Only good for use as a door-stop. Hell, I doubt you can find a TV, Blu Ray or DVD to connect it to anymore. Composite only. Absolute POS. If I recall correctly, it has no removable base-plate, making service a very lengthy and certainly non-viable option. Why anyone would contemplate repairing one of these things is beyond me. It was not even a high end model with decent audio output stages.     > Pb free solder is 100% guaranteed.   **Nah. I doubt it. Too old.     > But it ain't all that bad.   > IME, most Pb free stuff is far from impossible to deal with.   > A bit of 60/40 on top of any dodgy looking joint works wonders ..   **Sure does. Luckily, proper solder is still easy enough to buy.     -- Trevor Wilson www.rageaudio.com.au

ohger1s@gmail.com: Mar 17 02:47PM -0700 On Friday, March 17, 2017 at 3:54:14 PM UTC-4, David Farber wrote: > --   > David Farber > Los Osos, CA   Have you tried preheating the assy and see if the distortion appears more quickly or even immediately? A good percentage of timed issues are also thermal ones.

dansabrservices@yahoo.com: Mar 17 04:20PM -0700 > > David Farber > > Los Osos, CA   > Have you tried preheating the assy and see if the distortion appears more quickly or even immediately? A good percentage of timed issues are also thermal ones.   Actually, use freeze spray. spray one IC at a time and give it a few seconds to react. You should be able to isolate the offending IC that way. Works for transistors too.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 09:11PM <dansabrservices@yahoo.com> wrote in message news:d99eabce-7a92-4c45-b2a6-be70a4adfa41@googlegroups.com... > Please note that there are SMD versions of these as well. They will be > marked with a single zero(0).   > You will often see these used to jump a trace in SMD applications.   They occasionally double as test points on SMD boards.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 09:15PM <dansabrservices@yahoo.com> wrote in message news:164ada7d-a824-4311-bdf2-83e4c3c81c13@googlegroups.com...   > Probably getting a bit off topic, but when removing SMD parts, I use > ChipQuik. Check it out, it works great and the removed part can be used > again if it is not the problem.   I use a modeller's pencil blowtorch to heat the bare side of the board - when any SMD part moves; I tap the edge of the board on the bench and a whole pile of parts just fall off.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 09:17PM "Michael Black" <et472@ncf.ca> wrote in message news:alpine.LNX.2.02.1703121443420.5232@darkstar.example.org... > mostly as an oscillator. "WIreless mics", QRP transmitters on the amateur > six metre band, oscillator/mixer in various receiver circuits. Offhand, I > can't remember much of their use as amplifiers in hobby circles.   The hobby magazines of that era were full of TD bugs.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 09:19PM "Robert Roland" <fake@ddress.no> wrote in message news:lri7cc9u3e24tmsq8hvlb2e75o75t3m1r3@4ax.com...   >>Are you saying that approximately zero is good enough?   > I'm not sure I understand your question, but the third band is the > multiplier, and since the two first bands are zero,   I've never seen any with more than 1 black band round the middle.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 09:24PM "Ralph Mowery" <rmowery28146@earthlink.net> wrote in message news:MPG.332e6d0ab85d4d1f989893@news.east.earthlink.net... > number by zero and you get zero. It is more like the number of zeros to > put at the end. That is why a red red black is 22 ohms and not zero > ohms.   "multiplier" is a bit misleading - specifically its the number of zeros that follow the preceding group of numerical digits.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 09:05PM While trying to fix another problem - I found an entry for Candy Crush Saga in a default programs/file associations menu.   There was no option to remove it in that menu and it doesn't show in the add/remove programs menu.   Its not something I would deliberately install, so I can only assume it infiltrated on the back of an app installer.   Any help?   Thanks.

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Mar 17 07:51PM "Michael Black" <et472@ncf.ca> wrote in message news:alpine.LNX.2.02.1703131953380.8193@darkstar.example.org... >>> best operation.   >> How did Wi-Fi adapters find their way in? > Because it's a "USB stick".   Which I mentioned elsewhere had NTFS file system.........................   Several people grasped that it was a memory stick - I guess that one sorted the men from the boys.

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