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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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#1
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Oddball diode?
Sorry for asking what I know in advance is going to be a stupid
question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Thanks in advance, and sorry for the stupid question. Gordon |
#2
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Oddball diode?
" wrote: Sorry for asking what I know in advance is going to be a stupid question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Why do you think it's a rectifier ? What size is it ? How many pins ? Construction ? Colour ? etc... Graham |
#3
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Oddball diode?
Is there a cathode band on one end? How does it read on an X/Y component
tester or a diode leakage test on a digital multimeter? What does it connect to in the circuit? |
#4
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Oddball diode?
Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Gordon Do you think you should be working on televisions?? .... for your own safety you should go to the website for this newsgroup at http://www.repairfaq.org/ there, with some of your search time you will find a wealth of television repair information and most importantly, SAFETY information and proceedures that will keep you away from dangerous and lethal electrical shock hazards. electricitym |
#6
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Oddball diode?
On May 19, 4:24 pm, "
wrote: Sorry for asking what I know in advance is going to be a stupid question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Thanks in advance, and sorry for the stupid question. Gordon How about a couple of pictures, monitor model number, manufacturer, date code, etc!!! H. R. Hofmann |
#7
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Oddball diode?
On May 19, 6:06 pm, Eeyore
wrote: " wrote: Sorry for asking what I know in advance is going to be a stupid question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Why do you think it's a rectifier ? What size is it ? How many pins ? Construction ? Colour ? etc... Graham Because it has the cathode band on it, isn't glass, and has two pins. It's black, and the band (and writing) is brown. Sorry for not providing enough information. -Gordon |
#8
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Oddball diode?
On May 19, 9:55 pm, CJT wrote:
wrote: Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Gordon Do you think you should be working on televisions?? ... for your own safety you should go to the website for this newsgroup at http://www.repairfaq.org/ there, with some of your search time you will find a wealth of television repair information and most importantly, SAFETY information and proceedures that will keep you away from dangerous and lethal electrical shock hazards. electricitym Many arcade machines include CRT monitors with the same issues as TVs. -- The e-mail address in our reply-to line is reversed in an attempt to minimize spam. Our true address is of the form . Yeah... I've worked on MANY arcade CRTs... Just never a TV before. |
#9
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Oddball diode?
On May 19, 8:11 pm, "Matt J. McCullar" wrote:
Is there a cathode band on one end? How does it read on an X/Y component tester or a diode leakage test on a digital multimeter? What does it connect to in the circuit? Cathode band on one end. I get no reading on the diode leakage test. It's marked as D5E1 on the sync board. |
#10
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Oddball diode?
On May 19, 10:13 pm, "hr(bob) "
wrote: On May 19, 4:24 pm, " wrote: Sorry for asking what I know in advance is going to be a stupid question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Thanks in advance, and sorry for the stupid question. Gordon How about a couple of pictures, monitor model number, manufacturer, date code, etc!!! H. R. Hofmann Monitor is 50P-GHS81. Made by Mitsubishi. Date stamp reads December 1997 MINO. Will upload pics shortly. -Gordon |
#11
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Oddball diode?
On May 20, 1:11 am, "
wrote: On May 19, 8:11 pm, "Matt J. McCullar" wrote: Is there a cathode band on one end? How does it read on an X/Y component tester or a diode leakage test on a digital multimeter? What does it connect to in the circuit? Cathode band on one end. I get no reading on the diode leakage test. It's marked as D5E1 on the sync board. I got no reading because my battery was dying and I didn't notice the display. Leakage test reads .534V. |
#12
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Oddball diode?
On May 20, 1:04 am, "
wrote: On May 19, 6:06 pm, Eeyore wrote: " wrote: Sorry for asking what I know in advance is going to be a stupid question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Why do you think it's a rectifier ? What size is it ? How many pins ? Construction ? Colour ? etc... Graham Because it has the cathode band on it, isn't glass, and has two pins. It's black, and the band (and writing) is brown. Sorry for not providing enough information. -Gordon Ack. This is what I get for posting while I'm distracted. Forgot important information. Board has a symbol on it related to the position. Is a normal diode symbol. Def not zener, shottky, etc.... |
#13
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Oddball diode?
" wrote: On May 19, 6:06 pm, Eeyore wrote: " wrote: Sorry for asking what I know in advance is going to be a stupid question, but I tried googling and could find no information. Normally I work on pinball machines and arcade machines, and I've never run into this part until I was asked to work on a television set with bad sync. Anyways... on the sync board is what I assume to be a rectifier... marked B12 in large letters, with the number 69 in small letters. I can find no information online.... any ideas on what exactly this part is, and its specs? Why do you think it's a rectifier ? What size is it ? How many pins ? Construction ? Colour ? etc... Because it has the cathode band on it, isn't glass, and has two pins. It's black, and the band (and writing) is brown. Size ? Sorry for not providing enough information. BZY69 was a low power 12V zener.....allegdly 2% tolerance... http://www.angelfire.com/bug/elektro...isi/zdiyot.doc https://www.ued.net/ued/addItems.do?itemCode=NAPBZY69 Graham |
#14
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Oddball diode?
wrote in message ups.com... On May 20, 1:11 am, " wrote: On May 19, 8:11 pm, "Matt J. McCullar" wrote: Is there a cathode band on one end? How does it read on an X/Y component tester or a diode leakage test on a digital multimeter? What does it connect to in the circuit? Cathode band on one end. I get no reading on the diode leakage test. It's marked as D5E1 on the sync board. I got no reading because my battery was dying and I didn't notice the display. Leakage test reads .534V. It's probably just a diode. It sounds like it's working correctly, I wouldn't spend too much time focussed on that part. |
#15
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Oddball diode?
On May 20, 9:07 pm, "James Sweet" wrote:
wrote in message ups.com... On May 20, 1:11 am, " wrote: On May 19, 8:11 pm, "Matt J. McCullar" wrote: Is there a cathode band on one end? How does it read on an X/Y component tester or a diode leakage test on a digital multimeter? What does it connect to in the circuit? Cathode band on one end. I get no reading on the diode leakage test. It's marked as D5E1 on the sync board. I got no reading because my battery was dying and I didn't notice the display. Leakage test reads .534V. It's probably just a diode. It sounds like it's working correctly, I wouldn't spend too much time focussed on that part. Wasn't ultra-concerned about it... I just have an obsessive need to know what I'm looking at. No biggie. I appreciate all of you guys' help. -Gordon |
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