Author Topic: tektronix 2215 Beam intensity problem  (Read 21027 times)

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Offline tautech

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Re: tektronix 2215 Beam intensity problem
« Reply #75 on: April 21, 2015, 10:21:44 am »
CRT HV Supply -1900 to -2100 V at pin 2 CRT socket.
As specified in SM Section 5, P 5.

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Offline ulyanoff

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Re: tektronix 2215 Beam intensity problem
« Reply #76 on: April 22, 2015, 08:03:44 pm »
    
Good evening! I think after these pics of my "quest" fault will be completed.
Photo taken by the camera in total darkness, found the most "bright" focus and brightness. Moreover, the intensity of this screen varies even when uncoupled from the plates when switching the duration of the sweep. Plate completely disabled horizontal and vertical. Transistor Q877 deleted. That's the "point" happened. Let me remind you that in the dark, the shutter speed of my camera for about 10 seconds.
p/s/ During the rotation of p on Board AUTO FOCUS and GRID BIAS of improvements is not received. all stronger eroded and faded.
 

Offline ulyanoff

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  • Country: ua
Re: tektronix 2215 Beam intensity problem
« Reply #77 on: May 20, 2015, 09:01:25 am »
Hello guys,
Somebody has a scheme Current Limit Board Configuration for Tektronix 2213 serial number is below
B020100, (B016612). I need scheme without Preregulator board, a input circuit.
I have burnt resistor and capacitor (C926,R926) on the input of all the manuals in network without the power supply circuit.
Thanks for prompt replay,
« Last Edit: May 20, 2015, 09:04:53 am by ulyanoff »
 

Offline ostap

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Re: tektronix 2215 Beam intensity problem
« Reply #78 on: September 01, 2015, 06:46:54 pm »
Hello guys,
Somebody has a scheme Current Limit Board Configuration for Tektronix 2213 serial number is below
B020100, (B016612). I need scheme without Preregulator board, a input circuit.
I have burnt resistor and capacitor (C926,R926) on the input of all the manuals in network without the power supply circuit.
Thanks for prompt replay,
Tektronix 2213 Current Limit Board  schematic

Yellow label all components need to replace :-)
« Last Edit: September 01, 2015, 07:13:05 pm by ostap »
 

Offline ostap

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  • Country: ua
Re: tektronix 2215 Beam intensity problem
« Reply #79 on: October 05, 2015, 03:51:32 pm »
Hello, guys! Please somebody knows that the inside unit of the multiplier U990 ? -2kV +8kV
Maybe someone help this circuit )
Theory (Tektronix 22XX HV MULTIPLIER x4 (-2Kv / +8kV))

Praktik & Install

Check -2kV / +8kV
« Last Edit: October 05, 2015, 03:56:15 pm by ostap »
 


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