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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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HELP needed. Was CRT arcing now Fuzzy Picture
Originally I had arcing flyback problem but this is now fixed. I
removed the flyback, found a little pinhole, filled it and fixed it. All was okay at 1st but there was a little arcing from metal to right of flyback at power on and off only. Picture was fine. Turned it on and off a few times and the picture is no longer fine! - it's really fuzzy and moving focus controls etc does not help. I know what was causing the arcing - I forgot to reattch one of the ground leads from the pcb on the back of the electron gun. Reattaching this to ground has cured the arcing but now my picture is all fuzzy. Guess I must have blown something? Any help would be really appreciated. I can send a picture of the fuzzy screen to anyone interested. Please copy replies to me on Thanks, Paul. |
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HELP needed. Was CRT arcing now Fuzzy Picture
The HV module in the flyback assy may have gone defective, or the tube has
been damaged. Try the flyback assy first. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "Paul Richards" wrote in message ... Originally I had arcing flyback problem but this is now fixed. I removed the flyback, found a little pinhole, filled it and fixed it. All was okay at 1st but there was a little arcing from metal to right of flyback at power on and off only. Picture was fine. Turned it on and off a few times and the picture is no longer fine! - it's really fuzzy and moving focus controls etc does not help. I know what was causing the arcing - I forgot to reattch one of the ground leads from the pcb on the back of the electron gun. Reattaching this to ground has cured the arcing but now my picture is all fuzzy. Guess I must have blown something? Any help would be really appreciated. I can send a picture of the fuzzy screen to anyone interested. Please copy replies to me on Thanks, Paul. |
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HELP needed. Was CRT arcing now Fuzzy Picture
I have ordered a replacement flyback and will try fitting this first.
I should add that the model of the monitor driver board is Wells-Gardner 25K7191. Paul. "Jerry G." wrote in message ... The HV module in the flyback assy may have gone defective, or the tube has been damaged. Try the flyback assy first. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "Paul Richards" wrote in message ... Originally I had arcing flyback problem but this is now fixed. I removed the flyback, found a little pinhole, filled it and fixed it. All was okay at 1st but there was a little arcing from metal to right of flyback at power on and off only. Picture was fine. Turned it on and off a few times and the picture is no longer fine! - it's really fuzzy and moving focus controls etc does not help. I know what was causing the arcing - I forgot to reattch one of the ground leads from the pcb on the back of the electron gun. Reattaching this to ground has cured the arcing but now my picture is all fuzzy. Guess I must have blown something? Any help would be really appreciated. I can send a picture of the fuzzy screen to anyone interested. Please copy replies to me on Thanks, Paul. |
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