Arcade Otaku - アーケード オタク

Pin "J" is ground (for measuring B+):

All MS8-26 chassis will work with that CRT except the version for A63LAV61X which doesn't have pincushion correction (not your case).

Is that tool actually turning the trimmer? Judging by the pic I would say it's unsuitable.

atiyatalla wrote: ↑

December 21st, 2019, 12:00 pm

PrincessPrinPrin wrote: ↑

December 21st, 2019, 11:44 am

Wires for vertical yoke are in bad condition.

Do you think that's the issue? How can I fix them.

Not the current issue but soon you'll have that too.

Adjust the trimmer for horizontal hold. It's one of the many along the edge of the main chassis.

Wires for vertical yoke are in bad condition.

If the anode voltage rises high enough to damage the CRT it means that the x-ray protection is not doing its job so the mosfet Q701 keeps driving the flyback when it shouldn't. The small module (U701) receives the x-ray protection voltage from the flyback (pin 10) and if this is detected as excessiv...

May i know your opinion ebout this one? https://www.ebay.com.au/itm/Sony-1-439-372-13-1-439-372-11-1-439-372-12-Flyback-Transformer-2052/293313453677?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D2%26asc%3D20160323102634%26meid%3Da8b4579f94ef4bd99e7e95ad29a09a09%26pid%3D100623%26rk%3D4%26rkt%3...

What's the issue with this monitor? Are you sure it's the flyback and not something else?

Anyway I would do it like this. The first time I would disconnect the 200V wire from the neckboard to see if the voltage is correct:

The G2 voltage on this monitor is not EHT-derived. The source is the HOT collector which is about 1000Vpp. This voltage is rectified to DC and the 1000VDC is sent to the neckboard where you have the adjusting pot. Pretty much all Sony displays of that time including TVs were like that. As for the pi...

You are right. There are only two wires coming out of the flyback. This visual shows where the white wire becomes red with some sleeve covering the joint: https://www.donberg-electronics.com/pics/h/hr_6415.jpg (it also shows the empty hole for thwe G2 wire) The pinout of the HR doesn't completely ma...

The upper pot must be focus and I think that was present on the original flyback too. The lower one looks just an empty hole to me. The question is why does it have a third wire when you only expect two? Check resistance across the black and white wires with a meter that supports at least 200Mohm.

It's perfect as it is. I bet it would be a good forum admin too.

Put the neckboard of the second chassis on the first chassis and you will probably have a working chassis.

Size and lead spacing are also parameters to take into account. For C504 and C505 lead spacing is 20mm, for C506 it can be either 15mm or 20mm. If you get the boxy non-Japanese types, lead spacing needs to be exact as they have pretty short leads. Your first link is 25.4mm but if the leads are long ...

The three brown caps (C504/505/506) form the retrace capacitor in parallel with the damper diode. They are are very important and at this point it would be a good idea to replace them. C504 is what nem said and is easy to find. C506 is 0.039uF 400V, also easy to find but C505 is 9100pF 2KV and this ...

Yes, but the pinout is reversed as far as I see:

I take it the pinout is the same as the MS9 but reversed, right?

looks like I'll have to make you another adapter.

You can have this one for free.

It's the line balance coil (sometimes called the differential coil). It adjusts cross misconvergence of horizontal lines: