I am having trouble playing a Hi-8 tape in my sony camcorder DCR-trv250

Your DCR-TRV250 uses a Digital 8 system to record and playback information on its cassette whereas the older Analog 8mm machines used the analog system. Unfortunately the two are incompatible.

Played the tape in an older sony camcorder,it worked!

All of the camcorders are designed to record and play on certain type of tape. If you try to record or play a different tape, it will not work.

example of different type of tapes are 8mm, digital 8. digital Etc. Your manual has all of the compatable tapes for your camcorder.

If you do not have your manual, use this link to download it for FREE

http://www.docs.sony.com/release/DCRTRV250.PDF

look at page 15 for all supported tapes

GOOD LUCK !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Clean the head and try again

DCR-TRV250 Sony camcorder needs Tape Path Adjustment to provide you correct sound because due to wrong alignment of tape drive on video-head, nosiy audio is being read and processed.

In 1990s Sony camcorder records movie in analog format so playing in digital camcorder like DCR-TRV730 doesn't mean it will be converted in digital format and you can not import file in PC for editing purpose. You will get analog signal while playing back old cassettes.

Regarding SP, LP speed, its decided at time of recording. Camera sens SP or LP automatically in playback and set itself accordingly.

If you want to convert old cassettes into digital format, connect our camcorder to DVD recorder and burn DVD which is digital format, copy DVD files in to PC and do desired editing.

The older tapes were shot on a 8mm camcorder and the camcorder you have wil not play them becasue it doesn't have backwards compatability with the older format. The tapes you recorded are on a digital 8 camcorderr and it is different encoding than the one you recorded the other 60 tapes with. You will need to find either a dcr-trv 350 trv 530 trv 730 ect as these have the ability to play all the tapes.
Or find an older 8mm camcorder to play your tapes with.
Hope this helps
Cheers
Al

First thing to determine is if your (Playback Mode) is set for Auto or Hi 8 / 8. Select VTR setting and then select Menu. Scroll to PB Mode and select Auto. Now try playback.

I believe all Sony model DCR-TRV2XX and 3XX would play Hi 8 and ST8
Such as DCR-TRV265, DCR-TRV285 DCR-TRV340, DCR-TRV355
I hope that give you some ideas

may be your camera not design to play the analog tape...there are some model that can playback a analog tape...i think your camera is for digital playback only.... check your user manual