Need assistance finding a schematic for the NAD316 v2. This is the one with the phono preamp. (Yup, I know that v1 is commonly available).
Thank you!
LongBow
Longbow
Badcaps Veteran
Last Activity: 04-22-2024, 05:47 AM
Joined: 06-03-2011
Location: Dallas, TX
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Need Schematic - NAD316 v2
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I see that this specific subject has generated amazing interest over the years. Certainly, replacing electrolytics on the display pcb will bring back the Jenn Air (and others) display brightness.
However...these things are getting old by anyone's standards, so we have to be practical and realize that the VFD (the display tube itself) slowly ages and as it does, it becomes dimmer and dimmer. Nothing can be done about that.
The second very common problem on these stoves is that various functions... -
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I agree that fixing dead power supplies is fun and definitely a learning experience. Some of those designs are one of a kind even though the general ideas stay the same.
My thinking on this subject overall is that the designers are not stupid. Sure many times popping in a few new capacitors will get it going. But manufacturers are aware of the figures on MTBF and try to get the supply to the finish line before the whole thing blows up. Sometimes there are actual crummy designs that need to be modified. You want to risk your...Leave a comment:
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Citing the frequencies of some generic switching supply and assuming that broad band interference will be transmitted and create interference with surrounding equipment is just ignorance. There are all kinds of linear and switching supplies. You get what you pay for. A typical output spec for a high quality 12 volt switcher is 150mv of noise at rated output.
Look at how many of our devices are powered by cord mounted switching supplies and somehow these rarely cause problems with computer peripherals,...Leave a comment:
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Re: Dim Clock LCD on Jenn-Air wall oven
While replacing caps on the display board used to be a great idea, keep in mind that even with a working display pcb, the VFD displays wear out and dim with age. There is nothing you can do other than to replace the VFD tube itself - it is NOT an LCD. Good luck finding just the VFD...that's when you get to consider replacing the entire assembly.Leave a comment:
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Commendable
It is typical to find most technical literature devoted to looking at the world from a voltage perspective. For some reason people have no problem with the idea that the ideal voltage source can deliver an infinite amount of current to maintain a given voltage. But, the idea that an ideal current source can provide an infinite voltage to maintain a constant current is somehow unacceptable.
As mentioned, the LM317 has an internal band-gap reference of 1.2 volts. That is a special physical thing that is very stable...Last edited by Longbow; 04-21-2018, 09:38 AM.Leave a comment:
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Key point: unknown manufacturer, item purchased on auction site.
From personal experience, there is a wide variation in the quality of discreet led's as well as with automotive LED modules. Some work OK, but burn out quickly. Some don't work at all, like yours.
The point: save a few bucks on the part, but be prepared to waste countless hours of your time trying to reverse engineer your vehicle's electrical system, or figure out why the part you have won't work in your particular vehicle.
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Sorry if I find this very funny. I've never had any problems like this, but it is very interesting. I'd like to know the brand or the web site that provided the LED unit. I've always had good luck with Superbrightleds. You might be surprised at what they can stuff into an LED module that may interfere with your project.
I think this vehicle has a lamp-out feature. On most vehicles it just illuminates a light on the dash, but some vehicles cut the power to the light. The most critical circuit has always been the directional flashers which...Leave a comment:
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We are positively inconvenienced by a question of such generality as yours. If you have a particular vehicle, or a particular fault your are tracing, perhaps there could be some intelligent suggestions.
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The broiler element draws high and constant current. It is likely that the broiler relay needs to be replaced. I imagine that the relay contacts welded themselves together and it will happen again soon. The relays are common and inexpensive. Replace both of them together.Leave a comment:
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There are zillions of these BAT54 dual diodes in SMD boards of many types. I will guess that it is simpler to use a package that is identical to most of the other parts, to make it easier for the assembly machines. Seems like most of the schematics I see use plenty of these as steering diodes on VFD display boards or system control boards. Did a new part fix the problem?Leave a comment:
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The link to the NVRAM chip tells you which pins do what. These things don't have a unique reset pin, but are reset via serial data commands. Don't worry with the chip, unless you have found that heating/cooling the chip itself reproduces the problem. The thing to check if possible is the main micro. If that thing is a BGA then forget it unless you have a schematic. Locate the various regulators on the board and check the voltages. A failing filter on these regulated lines can cause erratic power up behavior, you can be sure. But that doesn't mean it HAS to be...Last edited by Longbow; 01-20-2018, 12:52 PM.Leave a comment:
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That particular spec means that the device has to withstand at least 200v. reverse. But there are other important specs with thyristors, especially the turn-on voltage and turn-on pulse width required. Also, you need to look at requirements for the reverse voltage width. If too narrow, the SCR won't turn off. Or, you could just slap in the replacement and look for smoke (just kidding).Leave a comment:
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