Ikegami HTM-1990R black screen

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belzrebuth
Posts: 6
Joined: Mon May 15, 2023 10:15 am

Ikegami HTM-1990R black screen

Post by belzrebuth »

Hi,
I've got an Ikegami HTM-1990R which does not display anything and I don't think it has any static when powered on which is very weird.
It was very lightly used during its lifetime and I don't think there is any foul play be previous techs or hard life in general.
Could this be a power supply issue of some sort which prevents it to have high voltage?
Are flyback failures common on these?
edit : I opened it up and there seems to be two LEDs (D303 and D306) lit indicating (as per the service manual) the horizontal and high voltage circuits are both down :shock:
The HOT is not blown neither any other transistors I've measured.
I would really appreciate any ideas on how to proceed..
belzrebuth
Posts: 6
Joined: Mon May 15, 2023 10:15 am

Re: Ikegami HTM-1990R black screen

Post by belzrebuth »

Updated info on 1st pot as there were some false statements from my side.
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