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Author Topic: Hantarex Polo/2 25-28 Dead - how to test B+ (SOLVED)  (Read 2653 times)

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princess prin prin

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Re: Hantarex Polo/2 25-28 Dead - how to test B+
« Reply #40 on: January 19, 2020, 03:54:05 pm »
So I am thinking that the C96 is the issue.
Currently I have a 472J cap in.
If I change it to a 4.7uf the picture is to small....

Why did you change the value from 4.7uF which is correct to 0.0047uF (that's what 472 is)??
If you can't adjust width and you have a pincushion distortion it's because the correction signal from T19 is either missing or it doesn't arrive at the diodes. I'm wondering if the bridge/width coil is the problem. Or R135.
« Last Edit: January 19, 2020, 10:39:36 pm by princess prin prin »

perjmolsen

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Re: Hantarex Polo/2 25-28 Dead - how to test B+
« Reply #41 on: January 19, 2020, 04:59:32 pm »
Hi

THANKS!  ;D  :notworthy:

It where R137 that where dead!   :cheers:
Put in a new 10 ohm resistor, and now I am able to adjust picture  :applaud:

princess prin prin

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Re: Hantarex Polo/2 25-28 Dead - how to test B+ (SOLVED)
« Reply #42 on: January 19, 2020, 10:42:32 pm »
I don't work much on these later POLOs and I didn't notice there was a resistor in series with the EW signal until I looked at the schematics last night. Earlier Hantarex chassis don't have it.

perjmolsen

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Re: Hantarex Polo/2 25-28 Dead - how to test B+ (SOLVED)
« Reply #43 on: January 20, 2020, 05:30:55 am »
I don't work much on these later POLOs and I didn't notice there was a resistor in series with the EW signal until I looked at the schematics last night. Earlier Hantarex chassis don't have it.

Still I am amazed of you and grantspain  :notworthy: