I cannot find qd35 service manual on internet but qd33 is almost same as qd35 and according to service manual you need transformer of 17.4 V that means simply buy 18V (0,18V) transformer and you are good to go you can also buy 18-0-18v( like this one 18-0-18 2A, 230V to 18V Transformer - Rs.224.73 [16-01C-504] - MakeMyHobby!, Review your Hobby - Experience it here with MMH.) and use only single tap if you cannot find 0-18v transformer(0-18 will be smaller in size than 18-0-18). I changed my sl1300 transformer in similar fashion but mine uses 24V i changed it because original transformer inside turntable is of american 120v. 1 amp should be enough but buy 2 amp to be rest assured that it will work fine. And also match the size of transformer with faulty/old one so that it can fit easily. May be the screw hole does not match with technics transformer so you have to work around it to fit.