Welcome to the home of arcadecup. Keep them running Prepare yourself to relive your. Resources for Vintage Stereo AudioVideo Repair Restoration of Vintage Modern Stereo Audio equipment, ProAudio, VCRs, Turntables, ReelReels, Cassette decks. SAMSUNG Samsung LED TV 24 Inch Experience amazing HD resolution on a sleekly designed LED TV with an affordable price. TV and Monitor CRT Picture Tube Information. Copyright 1. 99. All Rights Reserved. Reproduction of this document in whole or in part is permitted if both of the. This notice is included in its entirety at the beginning. There is no charge except to cover the costs of copying. We will not be responsible for damage to equipment, your ego, blown parts. Special thanks to Bob Myers. Jeroen Stessen. Jeroen. Stessenphilips. com. Back to CRT FAQ Table of Contents. Thank you for posting about repairing your Samsung T220HD. I replaced the exact same capacitor and now my monitor works too. I had the most trouble taking it apart. Samsung Crt Monitor Repair Manual' title='Samsung Crt Monitor Repair Manual' />Identifying the Atari Rush Guts. I always like to examine the guts of the game, to see what makes it work. The boards in the back of the game seem pretty straight. ViewSonic LCD monitors change the name of the color temperature setting to Color Adjust, and image size adjustments must be made within the Manual Image Adjust. Tv repair tips, television faults, video faults, tv faults. This document contains a collection of information relating to CRT picture. This was originally from the TV and monitor repair guides of the. Sci. Electronics. Repair FAQ but has. Most new CRT related information originating on the. USENET newsgroups will be included here rather than in those other. The following may be of interest and cover many relavent topics related to. CRT based equipment. The PC Technology Guide has some. CRT and flat panel displays. This. site is well worth visiting to get an idea of the construction, operation. From David Moisan dmoisanshore. Ive seen a few such pictures and I was fortunate enough to find a book on. CRTs that explained quite a few things. Color Television Picture Tubes. Morell, Law, Ramberg, Harold. ISBN 0 1. 2 0. 22. Im not sure if its still in print but you might check out your local. If you are lucky enough to see The Secret Life of Machines on The. Learning Channel or was, last time I saw it, theres an episode on. TV. Its excellent The creator and. Tim Hunkin, has a weird sense of humor but hes very well. In the opening scene, he showed off a. TV that he sawed in half, showing the CRT construction very clearly. He must have let the air into the tube, then used a diamond saw to cut. Of course, he may not actuallyhave cut a TV in half manufacturers. Back to CRT FAQ Table of Contents. CRT Safety Issues. TVs and computer or video monitors are among the more dangerous of consumer. Microwave ovens are. There are two areas which have particularly nasty electrical dangers the. CRT high voltage. Major parts of nearly all modern TVs and many computer monitors are directly. AC line there is no power transformer to provide the. In the majority of designs, the live parts of the TV or monitor are limited. AC input and line filter, degauss circuit, bridge rectifier and main. B regulator if any, horizontal output. LOPT transformer, and parts. The flyback generates most. Since a bridge rectifier is generally used in the power supply, both. TV, from serious damage. Some TVs do not have any. These are. particularly nasty. The high voltage to the CRT, while 2. First, it is present in a. TV or monitor from the output of the flyback. CRT anode via the fat red wire and suction cup connector. If you. dont need to remove the mainboard or replace the flyback or CRT, then. Furthermore, while the shock from. HV can be quite painful due to the capacitance of the CRT envelope, it. It is essential for your safety and to prevent damage to the device under. Some of the large filter capacitors. This doesnt mean that every one of the 2. TV need to be. discharged every time you power off and want to make a measurement. However. the large main filter capacitors and other capacitors in the power supplies. CRT in a TV or video monitor will retain a dangerous or at least. The technique I recommend is to use a high wattage resistor of about. V of the working voltage of the capacitor. This will. prevent the arc welding associated with screwdriver discharge but will. RC time constant and its original voltage. Then check with a voltmeter to be double sure. Better yet, monitor. CRT discharge is nearly. M ohm resistor. Obviously, make sure that you are well insulated For the main capacitors in a switching power supply which might be. F at 3. 50 V this would mean a 5. K 1. 0W resistor. RC. 5 second. 5. RC2. A lower wattage resistor can be used since the total. If you want to be more high tech, you can. Capacitor. Testing, Safe Discharging, and Other Related Information. This provides a visible indication of remaining charge and polarity. For the CRT, use a high wattage not for power but to hold off the high. M ohms discharged to the chassis ground connected to the outside of the. CRT NOT SIGNAL GROUND ON THE MAIN BOARD as you may damage sensitive. The time constant is very short a ms or so. However, repeat. a few times to be sure. Using a shorting clip lead may not be a bad idea. HV lead is reconnected. More below. Note that if you. CRT, you may want to. HV even if you are not disconnecting the fat red wire the. G2 voltages on that board are derived from the CRT HV. WARNING Most common resistors even 5 W jobs are rated for only a few. V or more found in modern. Wattpad Stories Soft Copy Hard on this page. TVs and monitors. Alternatives to a long string of regular resistors are. However. note that the discharge time constant with these may be a few seconds. Also. see the section Additional Information on Discharging. If you are not going to be removing the CRT anode connection, replacing. CRT, I would just stay away from the fat red wire and what it is. Repeatedly shoving. CRT envelope which. Again, always double check with a reliable voltmeter T. Reasons to use a resistor and not a screwdriver to discharge capacitors. It will not destroy screwdrivers and capacitor terminals. It will not damage the capacitor due to the current pulse. It will reduce your spouses stress level in not having to hear those. You may hear that it is only safe to discharge from the Ultor to the Dag. So, what the are they talking aboutBTW, dont wash your CRTs even if the Maid complains about the filth until you. Dag isnt water soluble maybe thats why it has. It may all come off Wipe off the dirt and dust with. HV connector or make sure it is discharged. From Asimov mike. Dag is short for Aquadag. It is a type of paint made of a graphite pigment. It is painted onto the inside and outside of picture. This capacitor is between. F and. 0. 1u. F in. This seems like very little capacity but it can store a substantial. The outside dag is always connected to the circuit chassis ground via a. The high voltage. Ultor terminal must be discharged to chassis ground before working on the. TVs which didnt use a voltage divider to. TVs with a defective open divider. From Joseph Gwinn Joe. Gwinncomcast. net. The issue with CRTs is that the glass dielectric, having been kept at. The phenomena is called. Steam Game Key Generators. One can short such a CRT for a. So. leave it shorted. Big capacitors can do this as well, especially the big oil paper. HV power supplies. These can store a lethal jolt. This same phenomena is used in Electret microphones, where a thin layer. Teflon stores the HV charge needed to make the microphone work. Some manufacturers warn against powering a TV or monitor CRT without the. CRT neck board connected. Apparently, without something anything. CRT, the shortest path may be through the glass neck of the tube. CRT to whatever is nearby. There. arent many ions in a modern CRT but I suppose a few here, a few there, and. This is probably not a problem on small CRTs but for large ones with high. CRT. There is really no way to know which models will self destruct but it. DAG ground of the CRT NOT SIGNAL GROUND via the focus or G2. This probably applies mostly to large direct view TVs since they use high. CRTs but it wont hurt to take appropriate precautions with. Also see the section Disposing of Dead TVs or Monitors CRTs. Charged HV Capacitors. From Jeroen Stessen Jeroen. Stessenphilips. com.