LM317T Voltage Regulator with Pass Transistor

This is a video showing you how to strip a technics 1200/1210 back to its face plate. The reason for doing something like this is either to pain the face plate or to replace it, in either case stripping the turntable back to the face plate is required. Just as an experiment I phoned my local electronics repair shop to get a quote on how much he would charge to do this and he said 20 quid setup charge 40 quid to strip it and 60 quid to put it back together 120 QUID !!!!!!! Thats like 170 dollars I could buy a second hand turntable for that alternatively 85 quid to simply change the face plate thats like 120 dollars, so you are defiantly saving a bomb by doing this yourself. Its not massively difficult you just have to have your head screwed on and pay close attention to where all the bits went, if you think about it the main circuit board, the power circuit board, and the transformer are all joined so youre not going to put them back in the wrong place and you know where the tone arm goes and the pitch fader, and if you have ever switched on a technics turntable you will know where the power switch is, so you cant really go wrong. Information. When soldering on these turntables especially the older models leaded solder is normally used so keep your soldering tip clean after soldering, and mind your fingers because sometimes leaded solder can bubble and it spits and itll burn your fingers. This link is for more detail on removing the screws from the bottom of the turntable ...



http://www.youtube.com/watch?v=U_C-OKTovR4&hl=en

I'm Bill and these are the electronics I'm currently working on. This is a KITT scanner as seen on the front of the Knight Rider car which will eventually be on my 2004 Impala and an adjustable voltage regulator.



http://www.youtube.com/watch?v=iAk4XSwQjHc&hl=en

3in1 Battery Charger - Power Inverter - Voltage Regulator Fully Automatic 1000w and 2000w inverter check us out www.pmenterprises.weebly.com



http://www.youtube.com/watch?v=hXj0H4t31CE&hl=en

Furman's Rob Harris sits down and talks shop with Ivan Moody, Jason Hook, and Zoltan of Five Finger Death Punch.



http://www.youtube.com/watch?v=DonL8uiv8Es&hl=en

www.georgesmusiconline.com



http://www.youtube.com/watch?v=esgdIHWGBuM&hl=en

Disclaimer: unfortunately I cannot be responsible for damages to your equipment as this is not a common rapier or service procedure and you will be using non original parts that said if you follow the video to every step and make sure you are confident you have the correct parts youll be fine. (Sorry just covering my ars) This is a video showing you how to replace the little pop up target light on the front of your Technics SL MK2 turntable to an LED. the advantages to this are, the LEDs draw less power, they are brighter, they have a longer life span and as an added bonus they work out cheaper in the first place. By the way the LEDs on my decks look blue but they are actually white, they look blue on the camera because they have a high colour temperature. Order codes: Order code for maplin led: N28BY = WHITE. N30BY = GREEN. N33BY = SUNSET ORANGE. N31BY = BLUE. N32BY = YELLOW. Order code for maplin voltage regulator: QL31J = (PART NUMBER: TS7805CZ) OR UJ54J = (PART NUMBER: L78S05CV) When ordering the voltage regulator be sure to check the part number on the part its self to insure you are getting the correct part. Order code for Radioshack voltage regulator: 276-1770 = (PART NUMBER: ML7805A) WANINGS: Dont have the turntable plugged in while you have the plastic case off, i did the test with the multi-meter so you dont have to. Check and double check that there are no short circuits before powering up your turntable, and never allow a short circuit to occur in the lamp ...



http://www.youtube.com/watch?v=IjBLWy5OC7Q&hl=en

Any help on the relay issue would be appreciated. Edit: I have resolved the issue, by adding a small capacitor between the LCD 5V+, and GRND. The problem is that i have a defective 5V voltage regulator, which only produces 4.4V at minimum load. This causes the LCD's brownout detector to momentarily trip when the NAC relays magnetize.



http://www.youtube.com/watch?v=Sv62KyaiOa8&hl=en