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Hantarex Polo/2 25-28 Dead - how to test B+ (SOLVED)
perjmolsen:
--- Quote from: baritonomarchetto on December 16, 2019, 01:58:28 am ---Recap your power supply circuit, if you have not done it yet
--- End quote ---
But my PSU volts are all OK when i use a 40W bulb as a test load?
baritonomarchetto:
I am not saying that recapping the chassis will 100% solve your issue, but you will have a better starting point going on with the troublreshoot. Leaking caps give all sort of bad behaviour and after 30-40 years it's good practice to replace electrolitics.
perjmolsen:
Hi :cheers:
Started looking at this chassis again, trying to figure out why BY228 at D44 gets hot, and I why my picture looks like the one below, (the picture is a bit dimmer than the photo below, camera adds a bit light to the photo)
I am unable to adjust the picture better than what you see.
I have changed the following caps, but it did not change anything
c17 220uf 50v
c18 22uf 50v
c25 22uf 50v
c31 470uf 35v
c32 220uf 25v
c106 47uf 250v
c92 4.7uf 250v
c11 100uf 250v
C9 150uf 400v
C87 1uf 100v
C88 4.7uf 100v
Tested
D44 by228
D47 BYW95C
C99 8.2 NF
C97 .33J 250
C96 4.7 NF
My B+ is 145V
I am thinking, that I might had put in the wrong flyback HR7191, even that the old one where a HR7191
A Hantarex polo/2 this chassis is a dural sync right?
So a HR7375 flyback is the correct flyback for this chassis right?
grantspain:
polo 2 auto or polo 2 15?
polo 2 auto is hr7375
polo 2 15k is hr7191
how do you tell, does it have the switching pcb in the power supply section
perjmolsen:
--- Quote from: grantspain on January 17, 2020, 05:55:56 pm ---polo 2 auto or polo 2 15?
polo 2 auto is hr7375
polo 2 15k is hr7191
how do you tell, does it have the switching pcb in the power supply section
--- End quote ---
HI :cheers:
Hmm...switching pcb in the PSU... :o
The PSU part look like this :notworthy: