Changes

The 9V and 1.5V batteries are optional. Instead of the batteries, you may also extract the voltages from elsewhere (like the CPC supply). They may be helpful to switch the TV to AV and RGB mode automatically, without needing to activate it via buttons on the remote control. Instead of Note that AV input can be usually selected using the batteriesremote control, you may also extract the voltages from elsewhere while manual RGB input selection is only available on more recent TVs. '''Battery duration''': since Pin 16 (like the CPC supplyRGB input selection)has an input impedance of 75 Ohm, valid are Pin8 it will drain a common fully charged 1.2V ~2500mAh AA battery in about one week, if left connected permanently to the TV set. {|class= "wikitable"|+| Pin| Voltage| Function| Note|-| Pin 8| 9.5V - 12V (| enables AV input| 9V is actually a bit too low), and Pin16 = |-| Pin 16| 1V - 3V.| enables RGB input||}

[[Image:CircuitCpc to scart.gifpng|600px|centre]]<BR>Just in case it is not obvious, use the six core cable to connect the DIN plug to the Scart plug and the Twin screened cable to connect the Jack Plug to the Scart Plug. The extra foot of twin screened cable runs from the Din plug (when the two cables are taped together) and plugs into the socket on the side of the CPC machine. Now that the Scart lead has been made up following the above diagram, tape the two leads together (or use the cable ties). Now you will need to turn to making [[Power_Supply_for_CPC_and_CPC_plus|adding a suitable power supply for your CPC. <BR><BR><li><b><u>POWER SUPPLY OPTIONS.</u></b><BR><li><i><b>You will require a Power Supply Unit that can offer 5 Volts at 2 amps and 12 volts at 1 amp for the CPC6128/CPC664 and for the CPC464 a 5 volt 2 amp unit.</b></i> <li> Use an Amstrad monitor but this to my mind defeats the purpose of a Scart lead -- you still have to find somewhere to put the monitor. <li>Use a MP2 modulator to supply the required voltages --- these are now hard to find in good order. <li>Use a PC power supply unit --- very unsightly unless you built a case to put it in and costly if purchased new. <li>Buy two power supply units, one offering 12 volts regulated DC, the other a 5 volts regulated DC --- again costly. <li>Use a Spectrum &#43;3 (or a &#43;2A) power supply as not only can it happily supply your required 5 and 12 volts but the lead you discard can be used to make the Scart lead, as it contains six cores and has a six pin DIN plug at one end --- so all you need to buy is a Scart plug, jack plug and the screened cable. An added bonus is if you obtain the machine with the &#43;3 power supply then you can use the disc drive as a spare for your CPC machine (yes they are the same). <li> Another excellent alternative and my choice, as a Power Supply Unit, is as supplied by Commodore for their various models of computer. Cheap to buy and with the advantage that they come with a mains on/off switch. 5 and 12 volts DC is available from all units so far encountered (but do check the base of the unit for specifications) with current ratings for the 5 volt supply at between 2.5 and 4.3 amps with 1 amp for the 12 volt supply. Modifications required are the same as for the Spectrum P.S.U. <BR><BR>If you are going to use a Spectrum Power supply unit as your power source then you will need to buy a DC Power socket (for the 12 volt supply --- the <font color=red>&#43;</font> connection goes to the outer terminal on the socket) and a lead fitted with DC Power plug (for the 5 volt supply --- the <font color=red>&#43;</font> connection goes to the inner terminal on the plug) --- you can rob these from your CPC monitor. I prefer to use for the lead, a power lead (it's just right for the job) as fitted to the Amstrad PCW8256/8512 printer (there are plenty of defective units around for pennies) and to buy a DC power socket. Remove the printed circuit board from the Spectrum power supply unit and test with your meter to find where the 5 and 12 volt points are, then solder the lead and socket to them.<BR><BR>The CPC464 only requires a 5 volt supply so the production of a Power Supply Unit for this model is much easier.<BR> ]]: [[Power_Supply_for_CPC_and_CPC_plus]]<BR>

[[Image:Alt_Scart_Connect.PNG|600px|thumb|none|Schematic to connect to RGB without requiring a 1.5V supply (Colour Picture) The 9V supply (as shown above) may still be required if the TV-Set has no AV Source Selector. If you experience picture flickering or the TV OSD appears intermittently while the CPC is connected, add a 100µf capacitor (optional) as shown above, this should resolve these problems. This setup won't work with all TVs. Some small 15" LCD TVs (for camping) have been reported to show ghost images with this setup, where a greyscale image is displayed besides the RGB image.]] '''The alternative wiring has been reported to often not work with modern LCD TVs or Scart2HDMI converters. In those cases often a (bad) gray scale image will be displayed or there will be no picture at all. It is recommended to no longer use this wiring and instead provide a real 3V voltage on pin 16, e.g. by connecting it to the 5V power supply with the help of a simple voltage divider resistor:''' [[Image:Cpc_to_scart_rgb_sw.png|600px|thumb|none|Schematic to connect to RGB on a TV set without RGB switch. You can get the +5 VDC from the CPC power supply.]]

You will need to find a Power Supply Unit giving a 5 volt regulated DC output. The advanced 3 inch disc drive as fitted to the CPC6128&#43; does not require 12 volts. Both the CPC464Plus and GX4000 will work fine using the same 5 volt power supply. The <font color=red>&#43;</font> voltage should be in the centre of the 2.5mm DC power connecting plug. <BR><BR>An excellent option to use as a Power Supply Unit, is as supplied by Commodore for their various models of computer. Cheap to buy, with a mains on/off switch and colour matched to the CPC&#43; machines. 5 volts DC is available from all units so far encountered (but do check the base of the unit See this Wiki article for specifications) with current ratings at between 2.5 and 4.3 amps. more information: [[Power_Supply_for_CPC_and_CPC_plus]]<BR><BR>

A SCART cable howto:https://www.youtube.com/watch?v=yNT36Tf6PxU