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Crumbtrail TV Forums: TV Equipment: Projection TV Forum:
Hitachi projection set model 50SX5P

 
 


RBlake
New User

Apr 12, 2003, 5:13 AM

Post #1 of 5 (2009 views)
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Hitachi projection set model 50SX5P Can't Post
When the power button is pushed there is a clicking noise, this is normal, however, the tv does not come on. The technician stated that the high voltage relay was cutting out but he was not sure why.



Is there a way to tell why, and what part needs to be replaced to solve the problem. The TV is a excellent piece of furniture and had an excellent picture until this problem. Please help.



Guest
Unregistered User

Apr 26, 2003, 4:41 AM

Post #2 of 5 (1964 views)
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Re: [RBlake] Hitachi projection set model 50SX5P [In reply to] Can't Post
As I remember, there are about 7 different protect circuits in those sets that can cause the unit to shutdown in case of a failure. There's ways of isolating each one, but unless you are a qualified servicer, I'd recommend taking it to someone who knows the Hitachi brand.


Guest
Unregistered User
scubadubadon@hotmail.com

Jun 10, 2003, 6:45 AM

Post #3 of 5 (1891 views)
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Re: [RBlake] Hitachi projection set model 50SX5P [In reply to] Can't Post
I am having the same problem with my Hitachi 53SDX89BA Power on with a click no picture no sound did you get your fixed if so what was the problem what was the cost ? Thanks Don


MaierTV
User

Jun 10, 2003, 7:32 PM

Post #4 of 5 (1885 views)
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Re: [RBlake] Hitachi projection set model 50SX5P [In reply to] Can't Post
As with most modern set they incorparte several protection devices

Your Hitachi could have one of these

If vertical in not preasent

over current draw on high voltage

32 volt line is shorted either because of audio or convergance Ic's

Or the B+ regulator has gone bye bye

But most of these sets that I have seen is cause by one or both of the convergance Ic's shorting and not takeing the fuse, this will shut the set down.

Not at the shop right now so I can not drag up the sckamtic there is a way either to lift a fuse or cut a lead to stop power to thse Ic's then if the set fires up with a distorted PIX and has audio we have located yore problem


Guest
Unregistered User
andrew@kelownatechnical.com

Nov 19, 2003, 5:21 PM

Post #5 of 5 (1643 views)
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Re: [RBlake] Hitachi projection set model 50SX5P [In reply to] Can't Post
were you losing picture occationally before this happened? this happened to me after my vertical ic blew. it took out the fuse to the right and a few caps around it at the same time. after i replaced these and about 4 days later the convergence on the blue seemed to go off and now its like the blue line will not move like the red line. Any ideas from anyone? like posted below where is the convergence ic????

 
 
 


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