picture problem - Hitachi 50UX7B
Hi, new to the group. I just picked up this 50" rear projection TV from a
friend, has a picture issue. To me, it looks like how some tv's do when they have a vertical hold problem. The picture will wobble/flag at the top, then roll over a few times. Then holds, then repeats. He said it did this a few years back, he had it sent in for repair - said they replaced some board, cost about $400 to have fixed. (would this be a "convergence board") Not sure what I'm looking for - but would like to get it running right as I remember it to have a great picture. Thanks for any help... |
picture problem - Hitachi 50UX7B
It's possibly a comb filter and/or PIP problem. I have the service
manual in PDF format from Hitachi Service. Not easily fixed in the house. Watch out for so called Techs who don't work at electronics full time, & some who only have a cell phone number! I'm seeing some units totally damaged, & not worth repairing! Dani. Barnhart Pinball wrote: Hi, new to the group. I just picked up this 50" rear projection TV from a friend, has a picture issue. To me, it looks like how some tv's do when they have a vertical hold problem. The picture will wobble/flag at the top, then roll over a few times. Then holds, then repeats. He said it did this a few years back, he had it sent in for repair - said they replaced some board, cost about $400 to have fixed. (would this be a "convergence board") Not sure what I'm looking for - but would like to get it running right as I remember it to have a great picture. Thanks for any help... |
picture problem - Hitachi 50UX7B
Disregard the warning part if the post! I forgot you were not
a local shop. Dani. Barnhart Pinball wrote: Hi, new to the group. I just picked up this 50" rear projection TV from a friend, has a picture issue. To me, it looks like how some tv's do when they have a vertical hold problem. The picture will wobble/flag at the top, then roll over a few times. Then holds, then repeats. He said it did this a few years back, he had it sent in for repair - said they replaced some board, cost about $400 to have fixed. (would this be a "convergence board") Not sure what I'm looking for - but would like to get it running right as I remember it to have a great picture. Thanks for any help... |
picture problem - Hitachi 50UX7B
While convergence problems ARE common to these sets, a ROLLING picture
leads me to believe that the problem is is on the small signal board. Most likely an electrolytic cap going bad near the main vid processor chip. IF you don't have an ESR meter to check the caps with ...you can use a heat/cold ( hair dryer/freeze spray ) to narrow down the area of the fault . ** common suspects are 1uF @ 50Vdc and 2.2uF @ 160Vdc hope that helps Barnhart Pinball wrote: Hi, new to the group. I just picked up this 50" rear projection TV from a friend, has a picture issue. To me, it looks like how some tv's do when they have a vertical hold problem. The picture will wobble/flag at the top, then roll over a few times. Then holds, then repeats. He said it did this a few years back, he had it sent in for repair - said they replaced some board, cost about $400 to have fixed. (would this be a "convergence board") Not sure what I'm looking for - but would like to get it running right as I remember it to have a great picture. Thanks for any help... |
picture problem - Hitachi 50UX7B
"Dani" wrote in
oups.com: It's possibly a comb filter and/or PIP problem. I have the service manual in PDF format from Hitachi Service. Not easily fixed in the house. Watch out for so called Techs who don't work at electronics full time, & some who only have a cell phone number! I'm seeing some units totally damaged, & not worth repairing! Dani. Saw your reply on the other thread, not a problem. How do I get a service manual like you describe in PDF? Would be handy... |
picture problem - Hitachi 50UX7B
It's at work, I may be able to E-Mail it to you. Not sure how big it
is. I'll see on Monday. Dani. Barnhart Pinball wrote: "Dani" wrote in oups.com: It's possibly a comb filter and/or PIP problem. I have the service manual in PDF format from Hitachi Service. Not easily fixed in the house. Watch out for so called Techs who don't work at electronics full time, & some who only have a cell phone number! I'm seeing some units totally damaged, & not worth repairing! Dani. Saw your reply on the other thread, not a problem. How do I get a service manual like you describe in PDF? Would be handy... |
picture problem - Hitachi 50UX7B
"Dani" wrote in
ups.com: It's at work, I may be able to E-Mail it to you. Not sure how big it is. I'll see on Monday. Dani. Saw your reply on the other thread, not a problem. How do I get a service manual like you describe in PDF? Would be handy... let me know - I'll email you my personal email address - not the one I list here. Appreciate any help! |
picture problem - Hitachi 50UX7B
snip.. How do I get a service manual like you describe in PDF? Would be handy... http://www.eserviceinfo.com/download...hi_46UX7B.html |
picture problem - Hitachi 50UX7B
" wrote in
oups.com: http://www.eserviceinfo.com/download...hi_46UX7B.html Thanks, exactly what I needed! |
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