Notorious "Service not running or scrambled" problem has gone from intermittent to hard on my Toppro TPR-5000 PVR
So I opened it up to check out capacitors
Seeing all electrolytics were 85° rated, I replaced most with known 105° Japanese, before running out of replacements
Left the others alone, assuming they're reliable polymers
Also left alone the visually OK Samwha electrolytics in the power supply
Gave it a try at that point, still "Service not running or scrambled"
TV has no problem with reception, getting signal from TPR-5000's Antenna Out - also no problem if I simply plug Antenna In and Antenna Out cables together, instead of both into PVR
Next effort was resolder all connections from tuner module (marked DNOT44QZV262A) to mainboard
Easier said than done - whatever lead-free solder was used by manufacturer, it sure is difficult to melt
After that, I had reception
Satisfaction didn't last long - a day later, "Service not running or scrambled"
So what do I do now?
Give in to planned obsolescence and buy another PVR?
Or think about replacing tuner module? - are these even available?
So I opened it up to check out capacitors
Seeing all electrolytics were 85° rated, I replaced most with known 105° Japanese, before running out of replacements
Left the others alone, assuming they're reliable polymers
Also left alone the visually OK Samwha electrolytics in the power supply
Gave it a try at that point, still "Service not running or scrambled"
TV has no problem with reception, getting signal from TPR-5000's Antenna Out - also no problem if I simply plug Antenna In and Antenna Out cables together, instead of both into PVR
Next effort was resolder all connections from tuner module (marked DNOT44QZV262A) to mainboard
Easier said than done - whatever lead-free solder was used by manufacturer, it sure is difficult to melt

After that, I had reception

Satisfaction didn't last long - a day later, "Service not running or scrambled"
So what do I do now?
Give in to planned obsolescence and buy another PVR?

Or think about replacing tuner module? - are these even available?
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