Rusted Push To ON Button Caused Permanent Display Of Menu In ZENITH CRT Monitor Model 56V
This CRT TV Monitor belongs to the hospital where I work and was brought to me with the complaint that the menu remains displayed on the screen always and the button does not respond. As you can see, the set is manufactured in October, 2004, i.e., 18 years over! Some of the vital signs can be seen only in CRT Monitor clearly and so, the hospital still uses such monitors.
I opened the monitor and cleaned the inside thoroughly. Then removed the PCB board from its holding to the front panel. As many of you might already know, a CRT monitor is more complicated than a CRT TV because of the need for high resolution and accuracy. There will be plenty of ground connections along with protective metal cases both for the main board as well as the CRT board. Located the control panel, which was deep inside, attached to the front cover. Managed to remove it using long screw drivers and hooks. Look at what I saw on the control panel:
I removed all the push to on buttons on the panel and replaced with new. Then pushed the control panel back to its original place, fixed the board back and switched on.
The Monitor was working very well and I fed various signals from the Monitor checker. Here, have a look at the pictures taken by me, as I was amazed at the clarity and function in spite of the extensive use of the monitor.
Mission accomplished and satisfaction got added to its collection bag!
This article was prepared for you by Parasuraman Subramanian from India. He is 72 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.
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You may check on his previous article on VDR Saved ONIDA Ultra Slim CRT TV MODEL CO21SJQ350BR From Extensive Damage By Lightning
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Andrew F. Ali
March 18, 2023 at 10:17 am
The Crosshatch is in petfect alignment. Perhaps some reagent spilled on the monitor or wet hands operated the monitor? Great work!!!
Parasuraman S
March 18, 2023 at 1:40 pm
Yes, regular cleaning takes place in the hospital and perhaps some wet hands would have caused the damage. Many thanks for your comments!
Waleed Rishmawi
March 18, 2023 at 5:46 pm
don't yo love it when the repair is this easy? thanks for sharing and have a blessed day
Parasuraman S
March 18, 2023 at 10:16 pm
Yes, dear! Love to do such easy repairs too! Many thanks for your comments!
Albert van Bemmelen
March 18, 2023 at 5:58 pm
Hospitals can't do without the good work of volunteers. In your case being the experienced top service providing electronics engineer!
Parasuraman S
March 18, 2023 at 10:16 pm
Many thanks for your comments and encouragement!
Yogesh Panchal
March 23, 2023 at 11:59 pm
Good Job! sir
Parasuraman S
March 24, 2023 at 9:08 pm
Many thanks!