I have a Hitachi Projection TV (model 50ux7k) that has some burns in a
couple of the projection tubes from a previous problem on the
deflection board. I am trying to determine if the cost of replacing 2
or all 3 of the tubes would worth the time and money (set is 12 years
old).
I've been checking around for projection tubes and have run into a
question that no one has been able to answer. The service manual for
Hitachi model 50ux7k lists the following part numbers for each tube
assy:

Red - 4866381
Green - 4866382
Blue - 4866383

One source, "Part solver.com", lists these three tubes for $353 each.
They also list these 3 additional part numbers:

Red - 4869321
Green - 4866385
Blue - 4869323

The green is the only one that states it is a replacement for #
4866382 and is listed at $354.
The red and blue are $282 each and do not have any information about
them. I called Customer Service, but they could not tell me any
information about the difference.

Can anyone tell me what the difference is, or lead me to a source that
can clear up the confusion in the following projection tube part
numbers?

Red - 4866381 vs. 4869321
Green - 4866385 vs. 4866385
Blue - 4866383 vs. 4869323

Another source also lists Part # 4866384 as a replacement for the
green projection tube.

Any information to clear up the difference in parts, will be very
helpful in my decision to repair or not to repair.

Thanks,
Joe R.

IMHO Being 12 years old it may be wiser to put your money towards a new set
and dumpster this one.
"Joe R." wrote in message
om...
I have a Hitachi Projection TV (model 50ux7k) that has some burns in a
couple of the projection tubes from a previous problem on the
deflection board. I am trying to determine if the cost of replacing 2
or all 3 of the tubes would worth the time and money (set is 12 years
old).
I've been checking around for projection tubes and have run into a
question that no one has been able to answer. The service manual for
Hitachi model 50ux7k lists the following part numbers for each tube
assy:

Red - 4866381
Green - 4866382
Blue - 4866383

One source, "Part solver.com", lists these three tubes for $353 each.
They also list these 3 additional part numbers:

Red - 4869321
Green - 4866385
Blue - 4869323

The green is the only one that states it is a replacement for #
4866382 and is listed at $354.
The red and blue are $282 each and do not have any information about
them. I called Customer Service, but they could not tell me any
information about the difference.

Can anyone tell me what the difference is, or lead me to a source that
can clear up the confusion in the following projection tube part
numbers?

Red - 4866381 vs. 4869321
Green - 4866385 vs. 4866385
Blue - 4866383 vs. 4869323

Another source also lists Part # 4866384 as a replacement for the
green projection tube.

Any information to clear up the difference in parts, will be very
helpful in my decision to repair or not to repair.

Thanks,
Joe R.

If you were to replace only one or two of the three tubes, you would never
be able to achieve good colour tracking due to the luminosity differences
from the wear on the older tube(s).

As for economics, I would think it to be unwise to spend any money on your
set. There are many other things that can go wrong. Infact many of the
non-generic parts are no longer available. There is a chance that a while
after changing the tubes, the flyback or some other device may go defective.
These parts may no longer be available, and you will end up with an
expensive scrapper TV set.

I would suggest to start shopping around for a new one, and retire this set
to the dumpster.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Joe R." wrote in message
om...
I have a Hitachi Projection TV (model 50ux7k) that has some burns in a
couple of the projection tubes from a previous problem on the
deflection board. I am trying to determine if the cost of replacing 2
or all 3 of the tubes would worth the time and money (set is 12 years
old).
I've been checking around for projection tubes and have run into a
question that no one has been able to answer. The service manual for
Hitachi model 50ux7k lists the following part numbers for each tube
assy:

Red - 4866381
Green - 4866382
Blue - 4866383

One source, "Part solver.com", lists these three tubes for $353 each.
They also list these 3 additional part numbers:

Red - 4869321
Green - 4866385
Blue - 4869323

The green is the only one that states it is a replacement for #
4866382 and is listed at $354.
The red and blue are $282 each and do not have any information about
them. I called Customer Service, but they could not tell me any
information about the difference.

Can anyone tell me what the difference is, or lead me to a source that
can clear up the confusion in the following projection tube part
numbers?

Red - 4866381 vs. 4869321
Green - 4866385 vs. 4866385
Blue - 4866383 vs. 4869323

Another source also lists Part # 4866384 as a replacement for the
green projection tube.

Any information to clear up the difference in parts, will be very
helpful in my decision to repair or not to repair.

Thanks,
Joe R.