Egret 3 chassis replacement

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OlDirty
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Egret 3 chassis replacement

Postby OlDirty » January 5th, 2017, 8:14 pm

Hi

Can someone tell me if a Wei-ya C3129DHSS chassis would work as a replacement for a Wei-ya C3129D01-7 ?
Londoncalling
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Re: Egret 3 chassis replacement

Postby Londoncalling » January 13th, 2017, 9:17 pm

What's the tube number on your Egret3?
That chassis shows as a replacement for Samsung A68QCP891X002
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » January 14th, 2017, 9:07 am

Tube No is : LG.PHilips A68QCU970X V4

DSC08225.JPG
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thechop
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Re: Egret 3 chassis replacement

Postby thechop » January 14th, 2017, 9:35 am

That's a dual focus chassis (you can tell from the 2 pin socket) single focus there's only one it's the same as the one I have for sale with a Phillips tube.
A single focus chassis won't fit so the replacement needs to be dual focus to fit the tube.
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Cmon chop I wanna see your manly bricklayer arms.
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » March 15th, 2017, 2:20 pm

Can someone tell me if a C3129D03 chassis could be used as a replacement for my C3129D01-7 ? Thanks
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turntablism
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Re: Egret 3 chassis replacement

Postby turntablism » March 15th, 2017, 2:36 pm

I have an M3129D01-7 in My AWSD
dont know if thg C3129D03 is compatible with your E3
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » March 16th, 2017, 7:55 am

I got this message from Mr. Wei-ya :cry:

After our engineer review, C3129D03 CANNOT replace with C3129D01-7 directly,
since there over ten parts difference on main board/CRT board/small board.
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » April 27th, 2017, 9:50 pm

Someone tries to fix my chassis but we need help. Does someone has a schematic of this chassis?

I am in need to get some information about this chassis
01.jpg


02.jpg


It works with some prob in the H-deflection.
There is a small auxiliary upright board in the near of the line-out-transformer.
Some connectors at its edge look burnt, but they are really good.
Nearby a resistor (R17?) ist burnt and open circuit, therefore the plastic is melted.
The big brown cap at its side is in spec.
Does any manual exist? Any the value of the resistor may move me forward.
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Shadolf
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Re: Egret 3 chassis replacement

Postby Shadolf » April 27th, 2017, 10:03 pm

Maybe you can get a scematic directly from Wei-ya.
Can you see any numbers or a color code on the resistor?
I also don't have such a monitor/chassis but maybe the is someone arround who has one and can identify the values of the bad components. You could make some fotos, too.
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » April 27th, 2017, 10:36 pm

It's the R17 resistor which is burnt and he can't see any colors anymore. Unfortunately he has the chassis so i can't take any pics. I just wrote to Wei-ya. Thanks the help
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grantspain
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Re: Egret 3 chassis replacement

Postby grantspain » April 27th, 2017, 10:56 pm

47 ohm 2w metal oxide
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » April 27th, 2017, 11:19 pm

Thanks. Do you also have a schematic? :awe:
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grantspain
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Re: Egret 3 chassis replacement

Postby grantspain » April 27th, 2017, 11:36 pm

no one has a schematic for these and wei ya will not release one
you can use the rodotron 666 schematic as the majority of the chassis is the same
the fact that resistor is cooked may point towards the HOT being short circuit
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » April 28th, 2017, 7:13 am

I emailed Wei-ya and you won't believe what i got :D . A schematic for the M3129D01-7. My one is a C3129... but i hope it's similar.

You said that R17 is 47 ohm 2w metal oxide but in both schematics it's 1kOhm?!?
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grantspain
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Re: Egret 3 chassis replacement

Postby grantspain » April 28th, 2017, 8:38 am

well that what is is on two chassis I have here
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » April 28th, 2017, 9:32 am

And you have excatly the C3129D01-7? Strange
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grantspain
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Re: Egret 3 chassis replacement

Postby grantspain » April 28th, 2017, 10:18 am

mine is the original c3129d chassis
perhaps you have the later chassis with the single connector to the 31khz switching pcb
20170428_083441.jpg

20170428_083526.jpg
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » April 28th, 2017, 10:55 am

In my chassis the resistor was pink, but unfortunately it's not possible to see the value on the old picture. :( Thanks a lot for your help

I just checked the R17 again on the small board and it's 47 / 2W. You are right. On the schematic were 2 R17, so that's why i was confused.

Here's the schematic for a M3129D01-7 M3129D01-72 (C3129D01-72): http://uploaded.net/file/nhj7p81l
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invzim
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Re: Egret 3 chassis replacement

Postby invzim » May 11th, 2017, 1:00 am

Great getting the schematic!

Not sure where to stick it, but at least it's on the wiki:

http://wiki.arcadeotaku.com/w/Taito_Egret_3
In The Name of Science!
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OlDirty
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Re: Egret 3 chassis replacement

Postby OlDirty » May 13th, 2017, 10:36 am

So what was the problem with the chassis. I try to translate what was discovered.

R17 is on a additional board "3119-3" PCB is in serie circuit with C8 and T1 on the lead of D and F
D leads to the base point of the H-deflection of the "Zeilenlinearitätsspule" :P
F leads to the middle point of the O/W modulation control
Therefore this circuit is placed paralell to the tangens condensator C84
Because of that the resistor can be destroyed if the main lead over the tangens condensator is interrupted

Something like this :D

So the tangens condensator C84 and the resistor R17 were broken.

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