How to mend Tvonics Dtr-z250

I have been given an old Humax rt-531 no hand book. ?

How can I mend my Humax PVR FVP-4000T?

alter brightness?

recording failure?

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repair 2 tv receiver faults?

My Humax YouView Set Top Box suddenly making a purple picture?

picture is to large for the tv screen?

can i fix this?

My tu160dtr wharfdale Unit is dead?

Humax P9300T?

How can I fix my PVR 9300T?

How to unlock my akira tv without remote?

What is the best way to improve an RF cable connection?

how can I fix my humax foxsat-HDR?

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My humax youview constantly says nearly ready?

PVR 9150T Recorded Prog problem?

Map Update?

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I have a Sony svr s550 freeview recorder with a which worked fine?

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Can you fix a freeview box which has frozen at startup. ?

PVR 9150T Recorded Prog problem?