I already made an ISO programmer from some info that I found in some thread, I already finished it but when I plug in the power supply the red led doesn't turn on, also I tried to read a card thinking the led was fried but the ISO doesn't have any power, it use 2 chips ( SP233ACP , HD74LS07P ) also has a 7805, a oscilator 3.68, 2 470 ohms and 4 22k resistors, where can be the problem? I checked all traces on the PC board and everything is as is showed in the guide, how can I find the problem? if anyone can help me let me know to send all the guide, or how can I insert the image or the zip file here. Thanks in advance.

I already made an ISO programmer from some info that I found in some thread, I already finished it but when I plug in the power supply the red led doesn't turn on, also I tried to read a card thinking the led was fried but the ISO doesn't have any power, it use 2 chips ( SP233ACP , HD74LS07P ) also has a 7805, a oscilator 3.68, 2 470 ohms and 4 22k resistors, where can be the problem? I checked all traces on the PC board and everything is as is showed in the guide, how can I find the problem? if anyone can help me let me know to send all the guide, or how can I insert the image or the zip file here. Thanks in advance.
that has no voltage reg or diode??

I already made an ISO programmer from some info that I found in some thread, I already finished it but when I plug in the power supply the red led doesn't turn on, also I tried to read a card thinking the led was fried but the ISO doesn't have any power, it use 2 chips ( SP233ACP , HD74LS07P ) also has a 7805, a oscilator 3.68, 2 470 ohms and 4 22k resistors, where can be the problem? I checked all traces on the PC board and everything is as is showed in the guide, how can I find the problem? if anyone can help me let me know to send all the guide, or how can I insert the image or the zip file here. Thanks in advance.
does your home made programer need a flash?

posted in wrong forum dude

no, there is no diode, but is not the 7805 a voltage regulator? And I also think the if it will need a flash it doesn't have anything to do with power, I think once I applied power the red led has to turn on, is that right? so I don't know what more to test because all the conection and traces are as is showed in the schematic.

Post moved to Dish Hardware

nice try keep us posted on your progress, sounds like fun

i have checked my pcb`s and have a possible cause for it not working .
where are you getting your material? rat shack os close but you need more precise metering and the math only adds more to the problem so what i will do is list all the components and repost in the file section

Before I say what I am going to say, I want to clarify something first. I am not trying to flame you, and I am not trying to insult you. I am trying to help you, if I can. But I think you need to understand something. Whenever you build something and it doesn't work, it is next to impossible for anyone to help you solve the problem.

Now, having said that, I don't think we can help you with this problem. Since we don't have the programmer in front of us so we can troubleshoot it to determine the problem, we are at a loss as to what to tell you.

The problem can be anything from a defective IC (or one of the other components) to incorrect wiring of the components. See, it would be all together different if this programmer actually worked at one time. If it worked at one time, then we would know it is wired correctly. Right now we don't know anything. I know you say you have double checked it, and I believe you when you say that, but since we can't physically check it over to verify the wiring, it makes it real tough for us to offer valid ideas.

I hope I did not upset you, and if I did I am sorry, but the problem you have is not the kind of problem that lends itself to an easy solution. There are just too many unknowns. Without being able to physically look at the programmer and the schematic diagram, I seriously doubt we can be of much help to you. I am truly sorry for that. I wish it were different. But, as I see it, that's the way it is.

If I send the picture of the ISO and all info to anyone of you, maybe you can guide me to any posible solution of the problem, let me know if you want me I send you the info and PM me your e-mail address. Thnaks in advance

Sounds like your problem is in the power supply. If you have a meter pull out the 7805 and see if you are getting d.c. to the correct pin of the 7805. With no rectifier I hope you are using a D.C. supply. If you have more than 5V at the feed pin of 7805 put it back in place and check the output voltage should be at 5v if center tap is at total ground.

where are you getting your power from ? are youusing a transformer or are you using 5volts from your computer?

I used an external power supply 7.5 volts, a tried 5 volts also and nothing.

nnnnnn

Estimado amigo : Si Ud. usa 7.5 volts éso nunca
va a funcionar ....

Pruebe con 9.00 Volts.......Para que un regulador de 3 patas
funcione necesita una diferencia de 3 volts mínimo sobre el
voltaje de salida.

Use 9 (nine) Volts

Favor poner diagrama
thats what i was thinkin

Make sure it is a DC power supply, and that your pollarity is correct!
Possitive to input of 7805, negative to ground.

How can I insert the diagram and the picture in this thread?

mmmmm

That's right swordfish, go with the 9VDC, it'll get you what you want. Just like FTI and Joel(HEY HAMIGO, QUE PASA) told you, you're always welcome here for help.

mmmm

A bi-lingual thread..........I like it!! :beer:

Swordfish, te deseo mucha suerte con tu problema :) Did you try 9vDC like some have recomended?

Joel, Shark-Attack, HAMIGOS 9VDC is the answer use it and you'll see. Great to have Bilinguals in here, many of us speak more than 1 language as well, welcome.

French, German, Ukranian, Spaniards, it doen't matter what your nationality is Brothers. I myself speak a load of Languages, as I'm sure lots of us here do. You're all wecome here, there's no ignorant racists here, come join us !

that ISO in the FAQ side is similar as the one I'm talking about, I also tried the 9vdc and nothing, the leds don't torn on, to whom can I send the PCB or diagram to check if they are well done?

Have you used a meter to check for voltage and pollarity?
Check pollarities on LED's, you may have voltage but wrong pollarity on LED's, that is why they won't come on.
Just my .02 worth.
If you are looking to send this someone to check it for you, PM me, maybe I can help.

mmmmm

Hi Swordfish, Joel knows what he's talking about. Be sure to check your Polarities, like he told you. Don't forget the LED's, Good Luck !

I have also built the loader u are taling about. Is up and running but I yet to get it to read a card.....

I stand by the post I made in this thread a long time ago. This thread was started about 6 weeks ago and as far as I can tell the programmer is no further along on the road to be fixed than it was back then. I would say it is time to move on to bigger and better things.