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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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VGA plug wiring advice needed
Hi Folks
I've got myself in a right pickle trying to fix the broken cable on my TFT monitor. It's a Mitac MT-15AX1-NBU. I need to replace the 15 pin plug but due to an unfortunate turn of events, I don't know what pins some of the wires should solder to. What I'm fairly sure about: 1 Red coaxial wire (RED) 2 Green coaxial wire (GREEN) 3 Blue coaxial wire (BLUE) 4 Short purple wire (ID GND) 5 Brown wire (GND) 6 Bridged with 7 & 8 (RED GND) 7 Bridged with 6 & 8 (GREEN GND) 8 Bridged with 6 & 7 (BLUE GND) 9 (+5v) 10 (Sync return/GND) 11 (ID GND) 12 Green wire (ID1/Data) 13 (Hz Sync) 14 Yellow wire (Vert Sync) 15 Orange wire (ID3/Clock) The mystery wires: A grey coaxial wire (thick like the R,G,B wires) A black wire The purple wire is a short length which does not continue up the cable to the monitor, so probably loops to another pin. I guessed that the grey coaxial wire might be Horizontal Sync. When it is connected to pin 13, I get a very red, fuzzy picture. Can anyone figure out how I should connect my mystery wires? TIA Tim |
#2
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VGA plug wiring advice needed
Tim Sampson wrote: Hi Folks I've got myself in a right pickle trying to fix the broken cable on my TFT monitor. It's a Mitac MT-15AX1-NBU. I need to replace the 15 pin plug but due to an unfortunate turn of events, I don't know what pins some of the wires should solder to. dunno why you're getting read and fuzzy. Did you connect the ground shields on the coax to pins 5-6-7-8-10? If that still doesnt work, you can get vga cables pretty cheap on eBay. |
#3
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VGA plug wiring advice needed
Ancient_Hacker wrote:
dunno why you're getting read and fuzzy. Did you connect the ground shields on the coax to pins 5-6-7-8-10? If that still doesnt work, you can get vga cables pretty cheap on eBay. No, I havent connected the grounds. I will give it a go. However, that will still leave me with 2 wires that aren't connected. Did I mention that the other end plugs directly into the monitor's internal board? If only they had used a standard plug to plug lead. Thanks Tim |
#4
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VGA plug wiring advice needed
"Ancient_Hacker" writes:
Tim Sampson wrote: Hi Folks I've got myself in a right pickle trying to fix the broken cable on my TFT monitor. It's a Mitac MT-15AX1-NBU. I need to replace the 15 pin plug but due to an unfortunate turn of events, I don't know what pins some of the wires should solder to. dunno why you're getting read and fuzzy. Did you connect the ground shields on the coax to pins 5-6-7-8-10? If that still doesnt work, you can get vga cables pretty cheap on eBay. Not if it's a cable hard-wired into the monitor! --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#5
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VGA plug wiring advice needed
Tim Sampson wrote:
Hi Folks I've got myself in a right pickle trying to fix the broken cable on my TFT monitor. It's a Mitac MT-15AX1-NBU. I need to replace the 15 pin plug but due to an unfortunate turn of events, I don't know what pins some of the wires should solder to. What I'm fairly sure about: 1 Red coaxial wire (RED) 2 Green coaxial wire (GREEN) 3 Blue coaxial wire (BLUE) 4 Short purple wire (ID GND) 5 Brown wire (GND) 6 Bridged with 7 & 8 (RED GND) 7 Bridged with 6 & 8 (GREEN GND) 8 Bridged with 6 & 7 (BLUE GND) 9 (+5v) 10 (Sync return/GND) 11 (ID GND) 12 Green wire (ID1/Data) 13 (Hz Sync) 14 Yellow wire (Vert Sync) 15 Orange wire (ID3/Clock) The mystery wires: A grey coaxial wire (thick like the R,G,B wires) A black wire The purple wire is a short length which does not continue up the cable to the monitor, so probably loops to another pin. I guessed that the grey coaxial wire might be Horizontal Sync. When it is connected to pin 13, I get a very red, fuzzy picture. Can anyone figure out how I should connect my mystery wires? TIA Tim Do you still have the broken plug? When I've replaced those plugs before, I used an ohm meter to identify the wires on the plug. |
#6
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VGA plug wiring advice needed
James Sweet wrote:
Do you still have the broken plug? When I've replaced those plugs before, I used an ohm meter to identify the wires on the plug. If only I had been that wise! The plug had a load of moulded gunk holding the wires in place. In trying to pull it away, I dislodged some of the wires so I don't know where they go. Thanks Tim |
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