Someone guide me! I accidently plugged the wrong adapter into my hauppauge wintv pvr2

[WarDemon666]

*repost because of locked thread in off topic forum*



What else could be the problem?

I cannot find any fuses in it so im guessing it may be a resistor or something else that blew?

Its not recognized in windows at all any more and the red light doesnt go on...


Can someone point me in the right direction and tell me what MAY be a problem?

Thanks a lot



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I dont have my multimeter on me, it's at home, I have 3...

but, theres 1 capacitor, I could check to see if theres any power going to it....

any methods of finding the problem?


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"What adapter does it usually use and what did you plug into it? You're probably not going to be able to replace any components that may have fried."


usually: 6v 1.66 amps

the one I plugged was 24v 0.75A

didnt follow the wire and plugged the wire for my steering wheel w/ force feedback :S

 

[nineball9]

You are going to need a certain level of electronics repair knowledge, though you might get lucky. First, plug in the regular power supply and make some voltage checks to ensure you actually have DC power to the circuit(s). From the DC input jack, follow the PCB wiring to see where the DC branches and do some resistance checking (unplug the power first).

Assuming you do not have a schematic you may want to sketch one as you go - just a basic starting point. When you encounter various components, measure their values. Some you can do in-circuit, though it helps to use a DMM set on a range that will not forward bias through a semiconductor for resistance measurements. You can measure the value of a cap but it won't mean much - an ESR meter is a much better tool for electrolytic caps. When you encounter a semiconductor, find the markings on the part, and see if you can cross reference it using NTE's online semiconductor cross reference site (it's free). This will help identify general semiconductors, but if you encounter a large IC, you'll probably get stuck as NTE will not have a replacement.

If you are lucky, you may find a simple diode (silicon or germanium), resistor, or fusable-resistor near the DC power jack which is faulty. Good luck!

 

[WarDemon666]

Wow.

Absolutely amazing. I will definately check this out. I quickly searched for an ESR locally online, cant find any, I may go take a look at the electronics store today... How much are those worth?

Since I do not have a multimeter on me today, and my multimeters are going on the bum, I would like to know if its worth getting another multimeter with a transistor test on it...

I seen a couple of manuals on how to test a transistor manually... Do I NEED the transistor test option on the multimeter?

Also on the board theres a little film to cover the traces, so no one can see where everything is goign, but there are little holes underneath where i could probably get a reading.... this is bad right? I dont think I can make a schematic with this!

Thanks for your help, its greatly appreciated!

Originally posted by: nineball9
You are going to need a certain level of electronics repair knowledge, though you might get lucky. First, plug in the regular power supply and make some voltage checks to ensure you actually have DC power to the circuit(s). From the DC input jack, follow the PCB wiring to see where the DC branches and do some resistance checking (unplug the power first).

Assuming you do not have a schematic you may want to sketch one as you go - just a basic starting point. When you encounter various components, measure their values. Some you can do in-circuit, though it helps to use a DMM set on a range that will not forward bias through a semiconductor for resistance measurements. You can measure the value of a cap but it won't mean much - an ESR meter is a much better tool for electrolytic caps. When you encounter a semiconductor, find the markings on the part, and see if you can cross reference it using NTE's online semiconductor cross reference site (it's free). This will help identify general semiconductors, but if you encounter a large IC, you'll probably get stuck as NTE will not have a replacement.

If you are lucky, you may find a simple diode (silicon or germanium), resistor, or fusable-resistor near the DC power jack which is faulty. Good luck!

 

[WarDemon666]

ok so I bought the multimeter, but dont have any batteries!

It wont really be possible to check for problems because i dont see any traces, right?

 

[nineball9]

You have PM ... I started it before your last post but didn't get back to it until later. Sorry.

If you can not see the traces on the PCB, you will have a tough time! You might follow the connection from the DC power jack to the circuit board and check that immediate area, but that's a shot in the dark. Can you even see the solder joints on the bottom of the PCB?

good luck!