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Hanrarex polo 16:9 to normal 28 inch 4:3 possible? (SOLVED)
princess prin prin:
The socket is installed incorrectly with the pins shifted one position. Blue cathode which is over 100V was sent to the heater. Let's hope the filament is not burned now. You'll have to make a hole for the SG (spark gap) pin as if it were pin 12 on the PCB and remove/cut the NC (not connected) pin. Also, one of the H (heater) pins is broken so it may not make contact with the PCB.
perjmolsen:
Oh... :banghead:
BUT... to my luck I did not break the CRT, I have just tested the CRT with another working Hantarex Polo chassis, and there is still a nice picture.
I have found Hantarex Neckboard from a chassis where I had PSU issues, I have now put that on this chassis.
Checked and double checked that I have put all the wires in the right spot, also the pin 1 on the ribbon cable that also this line up with pin 1 on the neck board.
Tried to fire it up, but still the same issue as in my video above... :dizzy: :dizzy:
Can It be that I have missed a cap somewhere...I think that I need to compare caps/resistors again?
princess prin prin:
The last picture doesn't even look like the same chassis as in the earier pics. You changed a lot of stuff besides the flyback: all the HV caps (when we saw that only C170 was different), HOT, TDA2593. Why? I can only suggest the usual things: check B+, horizontal drive, signs of life from the flyback.
perjmolsen:
--- Quote from: princess prin prin on January 14, 2020, 08:21:23 am ---The last picture doesn't even look like the same chassis as in the earier pics. You changed a lot of stuff besides the flyback: all the HV caps (when we saw that only C170 was different), HOT, TDA2593. Why? I can only suggest the usual things: check B+, horizontal drive, signs of life from the flyback.
--- End quote ---
Hi
Yes sorry :'(
I totally forgot to mention, that when I put in a new flyback my B+ where 164V.
But when I tested the PSU volts with a 40W bulb it where 145V
So with my basic skills I thought that the polyester caps where the cause for the high B+ with fly mounted. So I pulled them out and tested them, but they where fine, but I thought now that thay are old, and I have new ones so let me put new ones in, so I did.
I also tried to swap the TDA2593 out, to see if that fixed my high B+ but it did not.
Finally I figured out that my TH102 where dead, so I swaped it out with a working one, and my B+ where stable with the fly mounted 145V
So it is why you see some changed caps, and a IC socket beneath TDA2593 ;D
princess prin prin:
Any sign of life from the flyback (high voltage, G2, heater, 200V)? The quick glow seen in the video could mean it's going in x-ray protection. Leave pin 4 of the TDA2593 out of the socket and see if you get a picture.