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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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Hitachi PTV "Protectors"
Hello:
I have a Hitachi 50" Projection TV in my shop which has a number of "Protectors" in the various B+ circuits. I an unfamiliar with these as I have only recently started servicing Hitachis. What are these "protectors"? Are they like fusible resistors? Can they be replaced with fusible resistors or a 5x20mm fuse holder and a glass fuse? How do you determine the amperage, etc from the #? The ones in my customers set are numbered E991 thru E998 in the Hitachi schematic and are listed as having Hitachi part #s AZ00104M, AZ00107M, and AZ00109M. The parts list describes them as "PROTECTOR CRXT 491002, CRXT491004 AND CRXT491107" The model # of the set is 50UX52B and it has an AP73 chassis. Thanks for any info! Robert McPherson |
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Hitachi PTV "Protectors"
They are special IC protectors. You'll need a manual to determine the amp
value.. Go to Hitachiserviceusa.com and download the manual for that model.. Good luck |
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Hitachi PTV "Protectors"
http://www.iwaynet.net/~nesda/MiniFuse.pdf
"Robert McPherson" wrote in message om... Hello: I have a Hitachi 50" Projection TV in my shop which has a number of "Protectors" in the various B+ circuits. I an unfamiliar with these as I have only recently started servicing Hitachis. What are these "protectors"? Are they like fusible resistors? Can they be replaced with fusible resistors or a 5x20mm fuse holder and a glass fuse? How do you determine the amperage, etc from the #? The ones in my customers set are numbered E991 thru E998 in the Hitachi schematic and are listed as having Hitachi part #s AZ00104M, AZ00107M, and AZ00109M. The parts list describes them as "PROTECTOR CRXT 491002, CRXT491004 AND CRXT491107" The model # of the set is 50UX52B and it has an AP73 chassis. Thanks for any info! Robert McPherson |
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