maridadi

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  1. Jaclaz, Bow down to you!!! The orange and Black wires did the job..Thank you very much for the detailed explanation and your patience... My hard drive is restored and i am everjoyed. B You have in the above THREE statements: MAX232 powered with +5V: MAX232 transmits @5V HDD transmits @3.3V #1 is a "real" statement, as I preeume you know what you power your interface with #2 is EITHER an assumption OR you measured the signal on the board TX wire #3 is - by your own words - an assumption based on your trust in what I said Now, logic tells that if I say two things, you cannot trust my word for only one of the two, you have to choose if EITHER believe BOTH or NONE, i.e. I'm EITHER reliable or I am NOT. On the other hand the same logic says that if you actually measured the signal on the board TX wire (and thus #2 is NOT an assumption) you have the means (oscilloscope or signal analyzer) to measure the signal levels, if it is so , you can well measure the signal on the HD TX pin and thus need not to trust me, and need not to assume #3. I have NOT the faintest idea at what level works what, I simply draw sums out of data. From this, which remains probably the only thing I can understand : http://www.interfacebus.com/voltage_threshold.html A "proper" TTL (@3.3V) will understand a signal at anything over 3.3 V as "a suffusion of yellow". It is possible that the whatever is on the stoopid seagate disk understands something more than this let's say 4V and your particular interface sends data at a lower level than the maximum 4.7 V that the (@5V) TTL/CMOS allows, say 3.99999 whilst the Sparkfun thingy, if powered at 5 V actually sends signals at 4.6999999 V. Or it is possible that for any reason your interface actually produces 3.3V level signals and thus works allright. Without actual measurement of signals of BOTH your circuit and of a sample of the Sparkfun thingy it's hard to say. UPDATE: After all maridadi is NOT using the RS232 SMD shifter, but rather a Prolific USB to TTL adapter: jaclaz
  2. The Orange and black wires did the magic..my hardrive is restored. Thank you and all who have put in the hard work to find a solution to this problem... That's a problem with the convertor itself and has nothing to do with your harddrive. You probably removed the shifter from the USB-connector while a connection was still active in HyperTerminal. The easiest way to resolve this problem is to give your PC a cold boot (turn it off, then on again). After that, just start from the top (connect it to harddrive PCB and apply power). BTW: Did you manage to get a 3.3V supply; either from an orange wire from a SATA power connector or using two 1.5V (or one 3V) battery? Greetz, Peter.
  3. Jaclaz, I am using a RS232 shifter purchased from SParkfun. As far as the Prolific (USB to Serial Cable) is a medium between PC and Rs232 shifter. You have in the above THREE statements: MAX232 powered with +5V: MAX232 transmits @5V HDD transmits @3.3V #1 is a "real" statement, as I preeume you know what you power your interface with #2 is EITHER an assumption OR you measured the signal on the board TX wire #3 is - by your own words - an assumption based on your trust in what I said Now, logic tells that if I say two things, you cannot trust my word for only one of the two, you have to choose if EITHER believe BOTH or NONE, i.e. I'm EITHER reliable or I am NOT. On the other hand the same logic says that if you actually measured the signal on the board TX wire (and thus #2 is NOT an assumption) you have the means (oscilloscope or signal analyzer) to measure the signal levels, if it is so , you can well measure the signal on the HD TX pin and thus need not to trust me, and need not to assume #3. I have NOT the faintest idea at what level works what, I simply draw sums out of data. From this, which remains probably the only thing I can understand : http://www.interfacebus.com/voltage_threshold.html A "proper" TTL (@3.3V) will understand a signal at anything over 3.3 V as "a suffusion of yellow". It is possible that the whatever is on the stoopid seagate disk understands something more than this let's say 4V and your particular interface sends data at a lower level than the maximum 4.7 V that the (@5V) TTL/CMOS allows, say 3.99999 whilst the Sparkfun thingy, if powered at 5 V actually sends signals at 4.6999999 V. Or it is possible that for any reason your interface actually produces 3.3V level signals and thus works allright. Without actual measurement of signals of BOTH your circuit and of a sample of the Sparkfun thingy it's hard to say. UPDATE: After all maridadi is NOT using the RS232 SMD shifter, but rather a Prolific USB to TTL adapter: jaclaz
  4. Followed directions as stated.. I am still getting "unable to open com4. Check port settings"..HArd drive is not attached to PCB..insert a card stock between connections and only 3 screws on the pcb and HDD In that case we're almost there! First disconnect the power to the shifter! Remove the PCB from the harddrive and connect: The TX of the shifter to the RX of the harddrive The RX of the shifter to the TX of the harddrive The GND of the shifter to the GND of the harddrive (Be extra carefull not letting the wires touch each other) Next: Apply power to the shifter Open a connection with HyperTerminal (using the settings from my earlier post) Apply power to the PCB (remember: the harddrive itself is not attached now) Press the CONTROL and Z-button at the same time Now tell me what you see (you can copy and paste the text you see in HyperTerminal in your next reply between [ CODE ]-tags for clarity). Greetz, Peter.
  5. Peter, After powering up Converter (rs232 shifter smd), making sure rx and tx are connected to hdd, and finally powering up HDD i get the follwing message during hyper terminal session.. "unable to open com4. check your port settings". NOte hdd is powered up by the normal sata cable coming from pc power supply.. I made sure that Prolific USB to Serial cable drivers were downloaded and also under device manager, the hardware is shown under ports as Com4. Please advise
  6. Jaclaz, I am using a Rs232 shifter smd purchased from Sparkfun.. No prob , but then forget anything I wrote about the actual Rs232 shifter SMD, since you are NOT using one. jaclaz
  7. Using a Prolific USB to Serial converter How many "Rs232 shifter SMD" are there around? http://www.sparkfun.com/commerce/product_info.php?products_id=449 @maridadi Check ATTENTIVELY these (about 15 posts starting from here) : http://www.msfn.org/board/index.php?showtopic=128807&st=2326 AND points 6 to 10 in the "reame_first": jaclaz
  8. Jaclaz, My sincere apologies for the confusion and opening another thread. My first time here and did not read the rules and regulations first. Bear with me:) : How many "Rs232 shifter SMD" are there around? http://www.sparkfun.com/commerce/product_info.php?products_id=449 @maridadi Check ATTENTIVELY these (about 15 posts starting from here) : http://www.msfn.org/board/index.php?showtopic=128807&st=2326 AND points 6 to 10 in the "reame_first": jaclaz
  9. Greetz, Now getting the echo.. I apologize for the mess, as I am a novice and in desperation to revive my drive.. too much data of value.. Will await next instructions. Thanks alot. B As the wise Jaclaz already said: You'll have to apply power (+3.3V to +5V) to the VCC-port of the shifter and connect the GND to the ground of that power supply; you can use the RED (= +5V) and BLACK (= GND) wires from a free hard- or floppy-drive power-connector in your computer. Now try the loopback-test again and you'll it will work now. Greetz, Peter.
  10. Greetz, Thank you very much for your faste response.. i really appreciate it. Anyway, I did as you have asked: Pc- Usb to serial connected to - a RS232 smd shifter (has 4 ports VC Gnd TX RX) As you have instructed I connected the RX to th TX (loop) on the shifter WITHOUT and power etc. Opened hyperterminal (3rd party on Win 7), usb to serial cable on port 4(configured as stated by you). Typed on Keyboard, however no echo only a blinking dash (-). Please advise.. B
  11. Hard drive not recognized in bios, nor in device manager. Hard drive definately not fried as there is movement when powered up. After reading through possible solutions in the forum, I decided to try it myself. I am using 5volts from power supply to power RS 232 shifter smd.. connecting ground and power from Shifter to power source (5v). RX and TX on shifter to oppsite TX RX on seagate drive. (drive is not powered, does it need to be?). I am using usb to serial cable for communications and a version of hyperterminal on win 7. At control Z only a -> sign and no prompts. Changed RX and TX on seagate and no prompts at all. Where Can I be going wrong?
  12. Gradius... Need your assistance with Seagate harddrive.. I have all components to fix the BUSY state problem. I have connected as follows: I have soldered jumper wires to the Voltage, Ground, rx and tx ports on Rs232 shifter SMD. Connected from shifter smd to opposite rx tx on Seagate drive and voltage and grnd to power supply from Computer. Made sure that I used only red and black wires for Max 5volts. First According to your instructions I did not power up the seagate with sata power. So the only power is 5volts to rs232 smd shifter...and with this i did not get the required prompt on Hyperterminal... instead I get a Right arrow. Secondly, I tried powering up the pcb with Sata power from comp( segate powerd and also Rs232 powerd.. the hyperterminal answer i get is "port cannot be opened". I am using usb to serial cable. Please advise.. (