Photo he http://webpages.charter.net/dwarner2/I701.jpg

Part of: Hitachi 21" monitor, model CM802U Manufactured June 1997

Issue: Heavy vertical jitter for about 30 seconds during warm up,
even after blank screen screen saver.

Designation: I701,

Location: Front center on main board.

Markings: LA7860, 7BBS (no logo.)

Identified it by selective cooling with compressed air, general areas,
then through a couple feet of thin shrink tubing, then by dabbing with
a swab soaked in freeze spray. screen shakes when the chip passes
through a certain temperature range.

1. Is this a common part, or some Hitachi ASIC?

2. If I somehow managed to find a Hitachi servicer, would they replace
the part, or the whole board (assuming they're still available.)?

Yes, I could just buy a LCD display, but, to get the same real estate
of my two 21" CRT's, I'd have to buy an (expensive) 30" widescreen,
like the Dell 3007WFP..
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"Doug Warner" wrote in message
...
Photo he http://webpages.charter.net/dwarner2/I701.jpg

Part of: Hitachi 21" monitor, model CM802U Manufactured June 1997

Issue: Heavy vertical jitter for about 30 seconds during warm up,
even after blank screen screen saver.

Designation: I701,

Location: Front center on main board.

Markings: LA7860, 7BBS (no logo.)

Identified it by selective cooling with compressed air, general areas,
then through a couple feet of thin shrink tubing, then by dabbing with
a swab soaked in freeze spray. screen shakes when the chip passes
through a certain temperature range.

1. Is this a common part, or some Hitachi ASIC?

2. If I somehow managed to find a Hitachi servicer, would they replace
the part, or the whole board (assuming they're still available.)?

Yes, I could just buy a LCD display, but, to get the same real estate
of my two 21" CRT's, I'd have to buy an (expensive) 30" widescreen,
like the Dell 3007WFP..
--
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Spammers are Scammers. Exterminate them.



You can get one at http://www.ceitron.com/semi/semi.phtml?part=LA7860. Don't
remember if they have a minimum order.

--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

Life is like a roll of toilet paper; the closer to the end, the faster it goes.

On Sun, 18 Mar 2007 21:46:14 -0400, Doug Warner
wrote:

Photo he http://webpages.charter.net/dwarner2/I701.jpg

Part of: Hitachi 21" monitor, model CM802U Manufactured June 1997

Issue: Heavy vertical jitter for about 30 seconds during warm up,
even after blank screen screen saver.

Designation: I701,

Location: Front center on main board.

Markings: LA7860, 7BBS (no logo.)

Identified it by selective cooling with compressed air, general areas,
then through a couple feet of thin shrink tubing, then by dabbing with
a swab soaked in freeze spray. screen shakes when the chip passes
through a certain temperature range.

1. Is this a common part, or some Hitachi ASIC?

2. If I somehow managed to find a Hitachi servicer, would they replace
the part, or the whole board (assuming they're still available.)?

Yes, I could just buy a LCD display, but, to get the same real estate
of my two 21" CRT's, I'd have to buy an (expensive) 30" widescreen,
like the Dell 3007WFP..

Didn't even bother to Google this did you?

http://www.datasheetcatalog.com/data...8/LA7860.shtml

on the *first* Google hit.

PeterD wrote:



Didn't even bother to Google this did you?

http://www.datasheetcatalog.com/data...8/LA7860.shtml

on the *first* Google hit.

Nope.. I was dead tired, and just plain forgot.
Searched the next day, found the datasheet, (Deflection generator -
fits the symptom) Found a dealer, ordered one.
Also found a place to order a service manual (poor PDF scan for $15.00
with zero disassembly info.
Guess I'll have to dredge up my old TV repair skills,
(Yes, I know how to discharge a CRT, and attach a clip lead to the
2nd anode connection to keep the charge from rebuilding..)

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